15 & 18 The regulation of plasma osmolarity in the body is accomplished primaril

Question

15 & 18

The regulation of plasma osmolarity in the body is accomplished primarily through the renal regulation A. Water Balance B. Acid Base balance D. Sodium Balance Tubular reabsorption can involve which of the following transport mechanisms? A. primary active transport B. Secondary active transport C. Facilitated diffusion D. Osmosis E. All of the above Which part of the juxtamedullary nephron is responsible for establishing the vertical osmotic gradient in A. Juxtaglomerular apparatus B. Afferent arteriole C. Distal tubule D. Collecting duct E. Loop of Henle Which of the following is NOT capable of stimulating thirst (directly or indirectly)? A. A rise in plasma osmolarity B. Angiotensin II C. A decline in blood volume D. A decline in plasma osmolarity

Explanation / Answer

25) The regulation of plasma osmolarity in the body is accomplished primarily through the renal regulation of water balance (option A).

This is achieved by the secretion of anti diuretic hormone (ADH). The ADH is secreted by the posterior pituitary. It acts on the collecting duct of the nephron to absorb water if the plasma osmolarity is low.

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