QUESTION 7 1 points Save Answer Which of the following hormone mechanisms increa

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QUESTION 7 1 points Save Answer Which of the following hormone mechanisms increases ion AND water retention? (your selection must be able to stimulate both effects simultaneously) Natriuretic peptides Aldosterone Vasopressin Renin-angiotensin system QUESTION 8 1 points Save Answer What is the mechanism behind vasopressin effects? Storage vesicles containing Aquaporin-2 are transpo increasing the rate water can diffuse through the cells. ad fuse to the apical membrane of the collecting duct cells Shorngne eaicle contaning renin are transported and fuse to the apical membrane of te collecting dbuct celi releaang he renin into the collecting duct lumen. The levels of the Na-K-ATPase are increased in the basolateral membrane of cells of the ascending limb, increasing Na+ removed from the filtrate and therefore water too. Vasopressin increases the rate at which Aquaporin-2 translocates water by increasing each channel's efficiency

Explanation / Answer

Question 7: Renin-Angiotensin system:

At the time of low blood pressure and blood volume, renin is secreted in blood by juxtaglomerular cells. Renin converts angiotensinogen to angiotensin 1. Angiotensinogen is synthesizes by hepatocytes. Further angiotensin 1 is converted to angiotensin 11 by angiotensin converting enzyme. Angiotensin 11 affects renal physiology by

question no 8: mechanism of vasopressin

Question no 9: Angiotensinogen

Question no.10: Aldosterone

Question no. 11: severe dehydration results ..

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