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. What is the action of urodilatin? Urodilatin causes vasoconstriction of afferent arterioles. It causes vasodilation of the efferent arterioles. Urodilatin inhibits antidiuretic hormone secretion. Question 1 2 / 2 pts Question 2 2 / 2 pts 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. What is the direct action of atrial natriuretic hormone? Sodium retention Sodium excretion Water retention Water excretion Atrial natriuretic peptide (ANP) and brain natriuretic peptide (BNP) inhibit the secretion of renin, inhibit angiotensin-induced secretion of aldosterone, vasodilate the afferent and constrict the efferent glomerular arterioles, and inhibit sodium and water absorption by kidney tubules. The other actions are not a result of the atrial natriuretic hormone. Which statement best describes a Schilling test? Question 3 2 / 2 pts Question 4 2 / 2 pts Administration of radioactive cobalamin and the measurement of its excretion in the urine to test for vitamin B12 deficiency Measurement of antigen-antibody immune complexes in the blood to test for hemolytic anemia Measurement of serum ferritin and total iron-binding capacity in the blood to test for iron deficiency anemia Administration of folate and measurement in 2 hours of its level in a blood sample to test for folic acid deficiency anemia. The Schilling test indirectly evaluates vitamin B12 absorption by administering radioactive B12 and measuring excretion in the urine. This selection is the only option that accurately describes a Schilling test. Hemolytic disease of the newborn (HDN) can occur if the mother: CONTINUED...... [Show More]
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