Review 2130 - mini II

Review 2130 - mini II - December 10th, 2009 2130 Review...

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December 10 th , 2009 2130 Review – Minitest II Practice Questions Renal 3 1. Humans can regulate salt balance and water balance separately? A) True B) False 2. Water output in the body can occur in several ways, which of the following is not a way that water is lost in the body? A) Urine B) Feces C) Skin D) Lungs E) Circulatory system 3. Two primary mechanisms detect dehydration within the body, causing the release of ADH. Which of the following is true regarding these systems? (Hint: baroreceptors form inhibitory synapses onto the PVH/SON areas, so an increase baroreceptor in activity causes a decrease of ADH release…this is an aside ) A) Osmoreceptors in the frontal cortex detect changes in plasma osmolarity and upon an increase in osmolarity they cause the release of ADH. B) Osmoreceptors in the hypothalamus sense changes in pressure, when pressure is raised vasopressin is released. C) Baroreceptors in the carotid arch and aortic sinus sense changes in ECF volume and blood pressure, when blood pressure and ECF volume become too low ADH release is stimulated. D) Baroreceptors in the carotid arch and aortic sinus sense changes in the ECF volume and blood pressure, when blood pressure and ECF volume become too high ADH release is stimulated. E) None of the above. 4. ADH binds to anti-diuretic hormone receptors located on the basolateral surface of the collecting duct. This causes and increase in the cAMP, promoting the production and insertion of aquaporins in the basolateral membrane. A) True B) False 5. Alcohol can cause diuresis, or increased urine production. This occurs for which of the following reasons? A) It can cross the blood-brain-barrier and inhibit the release of ADH. B) It disrupts the binding of ADH to ADH receptors on the basolateral membrane of the collecting duct. C) There is no conclusive answer on the this subject.
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D) It causes the release of epinephrine which inhibits adenosine receptors, causing a heightened GFR. E) It does not cause diuresis. 6. There are two mechanisms by which the body can regulated sodium balance. Which of the following statements regarding sodium balance in the body is false? A) The RAAS pathway is a multistep pathway that results in the production of 2 hormones and 1 enzyme, that cause an increase in Na+ reabsorption. B) Atrial Naturetic Factor causes an increase in Na+ reabsorption C) Atrial Naturetic Factor causes a decrease in Na+ reabsorption D) The RAAS pathway is a multistep pathway that results in the production of 2 hormones and 1 enzyme, that cause a decrease in Na+ reabsorption. E) Two of the above. 7. The RAAS pathway promotes increased reabsorption of Na+ in the Kidneys. Which of the following is not necessary for this pathway to function? A) Juxtaglomerular Cells.
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This note was uploaded on 02/27/2010 for the course PHYSIOL 2210 taught by Professor Betts during the Spring '10 term at UWO.

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Review 2130 - mini II - December 10th, 2009 2130 Review...

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