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2023 NR507 MIDTERM CHAMBERLAIN Verified Answers (Graded A+ )
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2023 NR507 MIDTERM CHAMBERLAIN Verified Answers (Graded A+ ) GRADEXAM
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CD4 T-helper Th2 lymphocytes MIDTERM EXAM NR 507 - CHAMBERLAIN Latest Question1 Which T-lymphocyte phenotype is the key determinant of childhood asthma? Cluster of differentiation (CD) 4 T-helper Th1 lymphocytes CD8 cytotoxic T lymphocytes Memory T lymphocytes Asthma develops because the Th 2 response (in which CD4 T -helper cells produce specific cytokines, such as interleukin [IL] –4, IL -5, and IL -13) promotes an atopic and allergic response in the airways. This selection is the only option that accurately identifies the appropriate T-lymphocyte phenotype. Question 2 Perceived stress elicits an emotional, anticipatory response that begins where? Prefrontal cortex Anterior pituitary Limbic system Hypothalamus Perceived stressors elicit an anticipatory response that begins in the limbic system of the brain, the only option responsible for emotions and cognition. Question 3 Hypersensitivity is best defined as a(an): Disturbance in the immunologic tolerance of self-antigens Immunologic reaction of one person to the tissue of another person Altered immunologic response to an antigen that results in disease Undetectable immune response in the presence of antigens Hypersensitivity is an altered immunologic response to an antigen that results in disease or damage to the host. The other options are not accurate definitions of hypersensitivity . Question 4 It has been determined that a tumor is in stage 2. What is the meaning of this finding? Cancer is confined to the organ of origin. Cancer has spread to regional structures. Cancer is locally invasive. Cancer has spread to distant sites Cancer confined to the organ of origin is stage 1; cancer that is locally invasive is stage 2; cancer that has spread to regional structures, such as the lymph nodes, is stage 3; and cancer that has spread to distant sites, such as a liver cancer spreading to the lung or a prostate cancer spreading to bone, is stage 4. Question 5 The lung is innervated by the parasympathetic nervous system via which nerve? Vagus Phrenic Brachial Pectoral Fibers of the parasympathetic division of the autonomic nervous system (ANS) travel only in the vagus nerve to the lung. Question 6 What is the action of urodilatin? Urodilatin causes vasoconstriction of afferent arterioles. It causes vasodilation of the efferent arterioles. Urodilatin inhibits antidiuretic hormone secretion. It inhibits salt and water reabsorption . Urodilatin (a natriuretic peptide) inhibits sodium and water reabsorption from the medullary part of collecting duct, thereby producing diuresis. It is not involved in the actions described by the other options. Question 7 What is the direct action of atrial natriuretic hormone? Sodium retention Sodium excretion Water retention Water excretionThe benefits of buying summaries with Stuvia:
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