23. In mammals, the medullary interstitial fluid near the renal pelvis isto the

Question

23. In mammals, the medullary interstitial fluid near the renal pelvis isto the urine entering the collecting duct. a. hyperosmotic b. isosmotic c. hyposmotic d. isoionic and hyposmotic 24. In mammals ADH acts on the by a. collecting duct; removing aquaporin channels from the membrane. b. collecting duct inserting aquaporin channels into the membrane. c. loop of Henle; removing aquaporin channels from the membrane. d. loop of Henle; inserting aquaporin channels into the membrane. 25. A patient that has internal bleeding is experiencing hypovolemia (lowered blood volume). Which of the following would not occur in response. a. Juxtaglomerular cell release of renin b. Angiotensin Il promotion of thirst c. Aldosterone secretion to promote Na* reabsorption d. All would occur

Explanation / Answer

23)a hyperosmotic

24)b The parts of the nephron where the receptors are specifically located are on the distal convoluted tubule (DCT) and collecting duct (CD). The hypothalamus stimulates the secretion of ADH when our osmolarity or extracellular sodium levels rise. 25) D body’s reaction to hypovolemic condition

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