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The nerve passes through the middle ear and the parotid gland Vagus Spinal accessory Cranial accessory Foramen magnum Internal carotid Cardiac branch External carotid To sternomastoid Pharyngeal and trapezius Superior laryngeal Internal jugular vein Internal laryngeal External laryngeal Cricothyroid Cardiac branch Subclavian artery Recurrent laryngeal (left) Fig cheap 4.5 mg exelon visa. Parasympathetic stimulation • Acetylcholine has a marked negative inotropic effect on myocardium decreasing contractility cheap exelon 6 mg with amex. Also exelon 1.5 mg fast delivery, the implementation of internationally recognized hospital infection control measures helped to contain the outbreak (Waisman 2005) safe exelon 4.5 mg. To ascertain a recent infection with a specific virus, a test for IgM against that virus could be performed as follows. In an epidemiological and general health purposes it is important to distinguish study, cheese intake was higher in children who remained between sugars naturally present in fruits, vegetables, caries-free over a 2-year period than in those who grains and milk as the evidence shows that these foods are 95 developed caries. The different types of re-treatment cases should be identified, namely relapse, failure and return after default. Therefore one has to have a high index of suspicion to diagnose the disease early for the outcome of treatment heavily depends on the stage of the disease at the time of diagnosis. During flexion and extension motions, the condyles of the femur both roll and glide over the surfaces of the tibia. Digoxin is the preferred agent to control ventricular rate; beta-blockers and rate-slowing calcium channel 59 antagonists have negative inotropic effects that could be deleterious in this setting. Dendritic cells have two stages of life: while functionally young and immature, they roam the periphery, eagerly collecting stuff but lacking the tools to activate T cells. The differing sensory stimuli are segregated in the spinal cord so that the various subtests for these stimuli can distinguish which ascending pathway may be damaged in certain situations. Slide 6 Each optic nerve carries all of the visual sensory information from the ipsilateral eye. Adult bone marrow has three distinct types of stem cells: hematopoietic stem cells, which give rise to red blood cells, white blood cells, and platelets (Figure 3. In the joints, large complexes form between rheumatoid factor and other IgG antibodies, contributing to inflammation and tissue destruction. Eye Surgery • Must lie very still because the incision and sutures can be damaged by pulling on the eye muscles. Given improved screening, improved prognosis following diagnosis and the aging population, the number of people living with lung cancer in the community is growing (Granger et al 2011). This transformation must ensure that mental health services and supports actively facilitate recovery, and build resilience to face life’s challenges. The disease is classified as: 1) Cutaneous leishmaniasis 2) Visceral leishmaniasis (Kala-azar disease) 3) Mucocutaneous leishmaniasis (espundia) Epidemiology The disease occurs in large areas of Asia, Latin America, and Africa. New York Assemblyman Sam Hoyt sponsored a bill stating that all new parents in New York State were to receive an informational leaflet detailing, “the effect of shaking infants and young children, appropriate ways to manage the causes of shaking infants and young children, and a discussion on how to reduce the risks of shaking infants and young 29 30 children” (G. Medical schools began to teach anatomy using human dissection; although some resorted to grave robbing to obtain corpses. Se intensifican cuando permanece mucho tiempo de pie y se alivian al elevar los miembros inferiores y con el reposo en cama. Urorectal Septum Malformation thought to be a deficiency in caudal mesoderm which in turn leads to the malformation of the urorectal septum and other structures in Horseshoe kidney the pelvic region. Habitualmente existe una crisis de advertencia y si no se piensa en esta posibilidad, sobreviene en pocos días la hemorragia masiva definitiva. We found that a third of the patients with penetrating All four patients who required urgent thoracic injuries were affected by alcohol or drugs. It should be supported by evidence-based written information tailored to the patient’s needs. Concomitantly, these sequences are evolving at their own pace and hence possess more than one molecular clock. Complications: Hydrocephalus; subdural effusion; cystic loculation of subarachnoid fluid; cranial nerve damage, especially deafness; focal neurological deficits; psychomotor retardation D. These children may be compromised from a pulmonary, hemodynamic, or neurologic perspective, and judicial use of any agent is warranted. Normally as a result of failure of the initial treatment, especially with breast- conserving therapies. Secretions from the bulbourethral glands protect sperm and cleanse and lubricate the penile (spongy) urethra. Reported prevalence of resistance from recent surveys in Algeria and the Gambia was very low, and only slightly higher in Zambia, confirming the low levels of resistance in the region reported in previous phases in the project. If a positive charge moves out of a cell, the cell becomes more negative; if a negative charge enters the cell, the same thing happens. Urine analysis, and include lifestyle modifcations, microscopy and culture will exclude medications, bladder retraining, urinary infections. The maxillary nerve leaves the sphenopalatine fossa via the divides into ophthalmic, maxillary and mandibular divisions. Positive laboratory test results for other known agents that are able to cause atypical pneumonia such as Legionella pneumophila, influenza and parainfluenza viruses, Mycoplasma pneumoniae etc. It is transformed into carbonic acid and then into bicarbonate in order to mix in plasma for transportation to the lungs, where it reverts back to its gaseous form. Proper wound care includes the following measures: • Adequate hemostasis locally to stop bleeding. Often incorporated into compound prepa- Neither is a controlled drug and so are more easily rations with aspirin or codeine. Prompt surgical closure of the skin defect preferably within 24 to 48 hours after birth is done to prevent meningeal irritation. The systemic circulation, which supplies all the tissues, is a high-resistance system with a large pressure difference between the arteries and veins. This includes the administrators, health care professionals and development of goals, indicators, providers, the private sector, researchers and benchmarks, targets and outcomes to non-government organizations. Because of the destruction of the articular cartilage the joint space on X-ray looks diminished. Evidence was insufficient to support the use of one treatment over the other for these outcomes. The ectoderm gives rise to cell lineages that differentiate to become the central and peripheral nervous systems, sensory organs, epidermis, hair, and nails. They also monitor the monthly collection of signed commitment statements and maintain the program database. Noncompliance also naltrexone’s effect on increasing the sensitivity may be associated with experiencing of opioid receptors in the brain to the effects of † 157 uncomfortable side effects at the start of a opioids. It contains important nuclei such as medial geniculate which is responsible for auditory sense and lateral geniculate which is responsible for vision. Eighty-seven percent of patients assessed for this outcome were in good quality trials.
Enforcing the practice of good personal hygiene purchase exelon 1.5 mg with amex, such as regular bathing exelon 1.5mg with mastercard, laundering clothes exelon 4.5mg with mastercard, not sharing towels purchase 3 mg exelon with mastercard, soaps and wearing sandals in communal showers. This material is intended for educational use only by practicing health care workers or students and faculty in a health care field. Failure of chest tube drainage, antibiotics, and fibrinolytics would necessiiate surgical intervention. Depending on the orientation of the section, certain cellular components may not be visible in all cells. Negative feedback is characterized by the inhibition of further secretion of a hormone in response to adequate levels of that hormone. Specimen Collection Specimen collection refers to collecting various specimens (samples), such as, stool, urine, blood and other body fluids or tissues, from the patient for diagnostic or therapeutic purposes. In females with this disorder, there is a symmetric, bilateral band of heterotopic gray matter in the subcortical white matter that underlies an apparently normal cerebral cortex. Immediate versus deferred androgen deprivation treatment in patients with node-positive prostate cancer after radical prostatectomy and pelvic lymphadenectomy. Prolonged use or high doses cause irritability and paranoia, hallucinations and delirium, respiratory and cardiac abnormalities and seizures. The luminal surface (center of the 40x view of colonic mucosa slide) is smooth and consists of pale cells (called Goblet cells), absorptive cells, and enteroendocrine cells that make up the mucosa. In North America, Canada has shown low proportions of resistance and relatively steady trends in resistance among both new and previously treated cases. Things happen very quickly in the world of excitable membranes (just think about how quickly you can snap your fingers as soon as you decide to do it). All data files and epidemiological profiles have been returned to countries for verification before publication. Burns: More Than Skin Deep More than simply a protective covering, skin is a fast: strip off the burned skin, then cover the highly dynamic network of cells, nerves, and blood unprotected underlying tissue. It is a rare but devastating infection characterized by muscle necrosis and systemic toxicity due to the elaboration and release of toxins. Así tenemos: - Várices esofágicas: se desarrollan en las venas en su interior en ocasión de hipertensión portal. In addition to blood supply from the external and internal iliac veins, the middle sacral vein drains the sacral region into the common iliac vein. The countries Cuba, France, Italy and Japan operate sentinel networks for surveillance. Nurse:- Patient care The patient need to be hospitalized in the early stages of the disease to avoid chronicity of the disease for proper patient care. The elucidation of protein function was possible with the global analysis of bacterial proteins, giving insights into the functional role of several so far unknown proteins. Brief interventions can be conducted face-to-face, plan, providing counseling and over the phone or via computerized feedback to pharmaceutical treatment recommendations, 62 offering problem solving and skills training patients. The shaft portions of both the ulna and radius have an interosseous border, whereas the distal ends of each bone have a pointed styloid process. Suppressive Therapy for Recurrent Genital Herpes Systemic antiviral drugs can partially control the signs and Suppressive therapy reduces the frequency of genital herpes symptoms of herpes episodes when used to treat frst clinical recurrences by 70%–80% in patients who have frequent recur- and recurrent episodes, or when used as daily suppressive rences (166–169); many persons receiving such therapy report therapy. Distribution of fluoride analysis of ground water samples from different States of India Number of Fluoride Fluoride Fluoride Maximum fluoride States water samples <1. The first stage of labour is when the muscles of the wall of the uterus start contracting while at the same time the muscle fibres of the cervix relax to allow expansion. Specific treatments for congenital diseases or degenerative diseases (like motor neuron disease) have not yet been discovered. Ventricular contractile function was preserved, and there was no mortality or decline in ventricular function during the follow-up pe- riod. In addition to the blood vessels, nerves follow the same paths into the bone where they tend to concentrate in the more metabolically active regions of the bone. Nasal mast cell stabilizers are commonly administered prophylactically, before an allergic reaction is triggered, although as-needed use has been described and may be of benefit. Why is it so important for the human heart to develop atrioventricular node contribute to cardiac function? This coat consists predominantly of fibroelastic connective tissue whose fibers generally occur in a longitudinal array. First-degree and second-degree burns usually heal quickly, but third-degree burns can be fatal because they penetrate the full thickness of the skin. Therefore you will be provided with a registration book for you to register all children with malnutrition. In the following section you will learn how you can counsel mothers and caregivers about the growth and nutritional status of their children. Lifestyle modifcations incontinence should commence • The patient should limit with conservative methods before intake of foods and drinks progressing to more complex that may irritate the bladder surgical procedures if these do not or stimulate the production work. The relationship of the individual with the closest social environments, such as the micro social spheres of family, school, or group of friends, is the subject of other courses and, therefore, will not be studied in this course. There are twenty two chapters each beginning with specific learning objectives in which succeeding by a background of the topic in discussion. It is known as the small intestine because, although it is longer than the large intestine, it is smaller in diameter, with an average width of about 2. Ahmed 4 - Albert and Jacoboiec Principle And Practice Of Ophthalmology 5 - Up to date - (C) 2001 - www. A similar observation has been reported from San Francisco (25) and showed that a higher morbidity and mortality included severe associated thoracic injuries. In effect, the boys and girls who grew up in an environment where substance use is habitual and allowed seem to have a higher predisposition to substance use themselves. Doxycycline, in contrast to other tetracyclines, is eliminated by nonrenal mechanisms. This has Treatment Of Voiding proven to be a very useful and safe method of emptying the Disorders bladder without continuous (Excluding Voiding Diffculty catheterisation. In addition, called the small and large bowel, or colloquially the “guts,” they constitute the greatest mass and length of the alimentary canal and, with the exception of ingestion, perform all digestive system functions. We would like to thank Gondar University for helping us with different material in order to make this note feasible. He called dwarfism recessive 1356 Chapter 28 | Development and Inheritance because it was masked in the offspring if one of the purebred parents possessed the dominant characteristic. The plexus will yield nerves which represent their composition (or most of it) to the front and the side of the body. This would minimize additional costs and prevent unsus- tainable monolithic programmes (2, 3, 6, 11, 12).
More than one species can be isolated or polymicrobial infection with other microorganisms can occur exelon 3mg low cost. Typical sesamoid bones are patella and pisiform carpal bone order exelon 6 mg with visa, which are in the tendon of quadriceps femuris and flexor carp ulnaris muscle respectively generic exelon 6mg mastercard. The key to a community action group´s success is having the support of opinion leaders (politicians cheap exelon 4.5mg without prescription, presidents of community or professional organizations, media publishers, etc. For example, body temperature is regulated at lower value during sleep and at a higher level during fever. In particular, the heart has to pump harder, and the lungs have more work to do supplying the needs of the enlarged uterus and the placenta. In exhalation, the passive phase of breathing, the muscles of respiration relax, allowing the ribs and diaphragm to return to their original positions. Chorea in system lupus erythematosus and “lupus-like” disease: association with antiphospholipid antibodies. At what stage(s), if any, in the treatment of an individual patient, does your program assess how well treatment is working? They are useful as alternative therapies for patients intolerant of β - agonists 4. Anatomical, morphological and volumetric analysis: a review of 759 cases of testicular maldescent. Data from countries in Central Europe show relatively low prevalences of drug resistance, with indications of an increase in resistance in a few countries. To discuss the long-term management of breast cancer patients in terms of return to work and the prevention of cancer recurrence. The first layer is the endoderm, a sheet of cells that displaces the hypoblast and lies adjacent to the yolk sac. Five criteria—skin color, heart rate, reflex, muscle tone, and respiration—are assessed, and each criterion is assigned a score of 0, 1, or 2. A thirty-five year-old nulliparous woman comes with history of swelling in the breast of 2-months duration. Cholesterol, diastolic blood pressure, and stroke: 13,000 strokes in 450,000 people in 45 prospective cohorts. In the diet of poor people, especially in the tropics, up to 85% of the energy may come from this source. Cervical vertebrae have a small body, reflecting the fact that they carry the least amount of body weight. Although toluidine blue is said to be specific for these granules, with >10 min incubations, the primary granules of promyelocytes are stained red/ purple. After one minute read the result by matching the color on the strip with the color on the reagent strip container 7. The connective tissue capsule surrounding the corpus spongiosum is not as thick as that surrounding the corpora cavernosa. Eosinophils and basophils – limited phagocytic activity, recruited in inflammatory reactions derived from some specific immune responses. The muscle is striated in the upper two-thirds and • The thoracic duct carries lymph from the cisterna chyli through the smooth in the lower third. However, chemical disinfectants powerful enough to destroy germs or extreme temperature cannot be used on certain articles, such as plastic. These osteogenic cells are undifferentiated with high mitotic activity and they are the only bone cells that divide. Hair Terms Meaning Alopecia Loss of hair Example: Alopecia areata (well-defined patch of complete hair loss) Hirsutism Androgen-dependent hair growth in a female Example: Hirsutism Hypertrichosis Non-androgen dependent pattern of excessive hair growth (e. Remarkably, the potential new uses often Oldﬁeld gave the medicines to ﬁve different types have little in common with a drug’s product label of parasites, each grown along with human cells (its “old” use). Appendiceal Mass and Abscess Defnition: Appendiceal mass is a palpable conglomeration of infamed tissue, including the appendix and adjacent viscera. The eighth trial (n=50; 2 percent of patients reporting this outcome) reported a treatment difference of zero. Accommodation ability changes with age; focusing on nearer objects, such as the written text of a book or on a computer screen, may require corrective lenses later in life. The endocrine system includes the pituitary, thyroid, parathyroid, adrenal, and pineal glands (Figure 17. R25 Any person with acute ischaemic stroke for whom previous dyspepsia associated with aspirin is reported should be given a proton pump inhibitor in addition to aspirin. Pie diabético infeccioso Son procesos infecciosos que se presentan en el pie del diabético que tienen como causa más frecuente un grave “pinchazo”, aunque también pueden deberse a contaminación de úlceras neurotróficas o isquémicas, onicomicosis, picaduras de insectos, rasguños o cualquier lesión mínima, como la producida por una 82 piedrecita imperceptible que se introduce entre la planta del pie y la suela del calzado durante la marcha, que lesiona la piel y posteriormente se infecta. Co-occurring Medical Disorders Because addiction causes, contributes to and co- occurs with multiple other diseases, including 70 other conditions requiring medical care such as † 4 heart disease and cancer, physicians and other medical professionals must address these co- occurring health conditions in the course of caring for their patients and assure that medication interactions and the use of * The following discussion is a brief overview of tailored treatment approaches for special populations and is not an exhaustive or definitive account of all possible treatments of this nature. If you don’t have a dentist, fnd one or ask your health care provider for the name of a dentist in your community. Water is an essential component of life because it is able to break the ionic bonds in salts to free the ions. Applying a Monte Carlo simulation model, they evaluated drug development from the perspective of a public-private partnership, taking into ac- count several factors such as the expected number of successful compounds, the expected costs of each stage of development and the development costs for suc- cessful and unsuccessful compounds. Sickle cell disease The single-gene amino acid substitution of valine for glutamic acid at position 6 in the b-hemoglobin chain results in the production of Hb S. Services, Food and Drug Administration, Center for Drug Evaluation and Research, Center for Biologics 61. On the day before he died, high rate of co-occurring conditions in people his aftercare program made the decision, with addiction, treatment programs frequently without consulting Brian’s therapist, or his do not address co-occurring health conditions or parents, to terminate their relationship with him. There has also been a differentiation between soft and hard drugs, although currently that distinction is rarely used because of its scant utility and the fact that it can give rise to the erroneous interpretation that so-called soft drugs are not quite detrimental to health. Block production who have received renal toxicity, N/V, with milk, chocolate medications decrease of antibody B cell. The immune defense system either destroys such agents on recognition or neutralizes foreign material that are different to the ‘normal self’ Defense against pathogens removal of worn out cells such as aged erythrocytes and tissue debris i. In the neck, the articular processes of cervical vertebrae are flattened and generally face upward or downward. The left ventricle is the major pumping chamber for the systemic circuit; it ejects blood into the aorta through the aortic semilunar valve. Overall, when the four validation groups were combined 47/4,799 (1%) patients with complete information in the combined cohorts scored 0, 191 (4%) scored 1, 543 (11%) scored 2, 847 (18%) scored 3, 11,165 (24%) scored 4, 994 (21%) scored 5, 852 (18%) scored 6, and 160 (3%) scored 7. Age Fast breathing 2-12 months 50 or more breathings/ minute 12 months- 5 years 40 or more breathings/ minute If we know the child is breathing fast through counting and checking against the above values, then we can say that the child has pneumonia. Social Social Social • Social protection: Percentage of population covered Nutrition protection Nutrition protection Nutrition protection by social protection and labour programmes. The major advantage of non-pharmacological approaches is the relative safety and freedom from side effects, compared with drug therapy. A persistently high pulse pressure at or above 100 mm Hg may indicate excessive resistance in the arteries and can be caused by a variety of disorders.
May increase dose weekly to maximum to 40 mg/kg/day in 2 divided doses with a maximum dose of 1 1.5mg exelon. Barr’s approach to prevention focuses on the normalization of persistent infant crying and on encouraging parents to develop effective coping strategies to deal with the feelings of low self-efficacy order 6mg exelon, depression purchase 4.5mg exelon free shipping, and frustration that can be associated with infant crying generic exelon 4.5mg overnight delivery. The back muscles stabilize and move the vertebral column, and are grouped according to the lengths and direction of the fascicles. Sydenham’s chorea Chorea occurs primarily in children and is rare after the age of 20 years. The connective tissue surrounding the alveolus is much more delicate (although compressed here) and is continuous with the papillary layer of the dermis. Radiation hazards: Many industries use radium and other radioactive substances and these exposures will lead to various hazards. The nature has designed the sole of the skin for weight bearing whereas the skin over the back of the body is not. After 20 weeks, doctors consider it to be a premature birth, although the chances of the baby surviving if born before 28 weeks are very slim. There may be some attenuation of the white matter, particularly of the cerebral hemisphere. Neurons are usually described as having one, and only one, axon—a fiber that emerges from the cell body and projects to target cells. Estos pacientes en general son longilíneos o muy altos o corpulentos, con várices de aparición en la juventud en ambos miembros inferiores. The Absorptive State The absorptive state, or the fed state, occurs after a meal when your body is digesting the food and absorbing the nutrients (anabolism exceeds catabolism). Institute of Medicine, Committee on Crossing the Quality Chasm:Adaptation to Mental Health and Addictive Disorder. Urea is not only less toxic but is utilized to aid in the recovery of water by the loop of Henle and collecting ducts. Thoracic vertebrae have sites for rib attachment, and the vertebrae that give rise to the sacrum and coccyx have fused together into single bones. Oedema, visible at feather-free parts of the head, cyanosis of comb, wattles and legs, greenish diarrhoea and laboured breathing may be inconsistently present. The cost-effectiveness of preventing tuberculosis in physicians using tuberculin skin testing or a hypothetical vaccine Arch Intern Med 1997; 157: 1121-7. Products for transportation the performance of centralized high-throughput testing of samples that improve the recovery and detection of platforms, the use of molecular sequencing as a reference M. Although the skin may be painful and swollen, these burns typically heal on their own within a few days. The origin of the mesentery measures approximately 15 sists of few arcades and little terminal branching whereas the vessels to cm and passes from the duodenojejunal ﬂexure to the right sacro-iliac the ileum form numerous arcades and much terminal branching of end- joint. The scanning procedure is painless and the patient just has to lie down still for a short period of time. One study found that for complete recanalisation, there was a significant difference in favour of anticoagulant therapy compared to antiplatelets, although this did not affect outcome. It is a term used for all permanent, no-progressive, generalized brain damage in children irrespective of the cause. The three temporal phases consist of the following: • Barrier defenses such as the skin and mucous membranes, which act instantaneously to prevent pathogenic invasion into the body tissues • The rapid but nonspecific innate immune response, which consists of a variety of specialized cells and soluble factors • The slower but more specific and effective adaptive immune response, which involves many cell types and soluble factors, but is primarily controlled by white blood cells (leukocytes) known as lymphocytes, which help control immune responses The cells of the blood, including all those involved in the immune response, arise in the bone marrow via various differentiation pathways from hematopoietic stem cells (Figure 21. The disorder is of variable penetrance, and thus different individuals can manifest different phenotypes and varying degrees of malformation. They differ in their chemical structure, route of metabolism and elimination, onset and duration of action. Diabetes in Africa: some of the factors related to the development of diabetes in Africa include: • Genetic Factors: Family history • Environmental Factors: such as infection, dietary changes. Procedure Similar with the cleansing enema but the enema should be administered very slowly and always be preceded by passing a flatus tube Note 1. Risk of influenza A (H5N1) infection among health care workers exposed to patients with influenza A (H5N1), Hong Kong. Recently there is a treatment developed for dental caries especially for developing countries like Ethiopia. P was established 1950 Notification all cases (rate) 72 /100,000 Year of Rifampicin introduction 1985 Estimated incidence (all cases) >80 /100,000 Year of Isoniazid introduction 1970 Notification new sputum smear + 2802 Use of Standardized Regimens Yes Notification new sputum smear + (rate) 45. Nets delivered in 2006 and 2007 are therefore already few decades has led to an intensifcation of efcacy monitoring to due for replacement, and those delivered between 2008 and 2010 allow early detection of resistance. The Global Project requests that survey protocols include a description of methods used for the quality assurance of data collection, entry, and analysis. These are stratum cornium, lucidium, granulosum, spinosum and basale, Stratum cornium is the outer, dead, flat, Keratinized and thicker layer. If delay in testing is unavoidable, the specimen should be placed in a refrigerator at 2-10oC and dealt with at the earliest opportunity. In the weeks before publication of this book, we gave daily accounts of everything about the project in an experimental blog. Learning Outcomes for Study Session 12 When you have studied this session, you should be able to: 12. It offers breast screening services free of charge to women who are aged between 50-64, repeat breast screening within an interval of 21-27 months. Basic Nursing Art 118 • When it is particularly desirable to eliminate the variability of absorption. The acquisition of new cognitive abilities leads adolescents on a relentless pursuit of new knowledge that had been preserved from them, and gives them the opportunity to discover an unexplored world. In the past, a common procedure was to give the patient a hot bath and a vigorous scrubbing with a brush until the patient bled, but this is not very effective at either removing or killing the mites. Radiologically, in bony ankylosis the trabeculae are seen to be crossing the joint line. Coagulation factors (factor V and thromboplastin) Note that some bacteria still survive – e. Although a person can experience a muscle “twitch,” a single twitch does not produce any significant muscle activity in a living body. Clinical Practice Guideline Treating Tobacco Use and Dependence 2008 Update Panel, Liaisons, and Staff. The specific functions of blood also include defense, distribution of heat, and maintenance of homeostasis. In this review, we formed conclusions about treatment classes based on meta-analyses of studies that compared single treatments. After the olfactory cells are stimulated by odor-causing chemicals, the resulting nerve impulse travels through the olfactory nerves in the olfactory bulb and tract and then enters the thalamic and olfactory centers of the brain, where the nervous impulses are 197 Human Anatomy and Physiology interpreted as specific odors. The vertebral artery passes through the vertebral foramen in the cervical vertebrae and then through the foramen magnum into the cranial cavity to supply blood to the brain and spinal cord.