Question
Human Physiology wiz needed
6. Most electrolyte reabsorption by the renal tubules: a. is Tm limited. b. occurs only in the distal convoluted tubule. c. is completed by the time the loop of Henley is reached d. is hormonally controlled in distal tubule segments. e. All of these are correct. 7. The mechanism by which the medullary osmotic gradient is established, depends most on the permeability properties of the a. proximal convoluted tubule. b. loop of Henle c. the distal convoluted tubule. d. the collecting tubule. e. c+ d 8. The kidneys are stimulated to produce renin: a. when the peritubular capillaries are dilated. b. when the pH of the urine decreases. c. by a decrease in the blood pressure d. when the specific gravity of urine rises above 1.10 e. All of these are correct. 9. Select the correct statements from the following: 1. Most of the water passing through the kidneys is eliminated as urine. 2. Normal filtrate contains a large amount of protein. 3. Reabsorption of water is hormonally controlled 4. The excretion of hydrogen ions is one of the mechanisms that maintains the pH of the blood. a. 1, 2, and 4 b. 2, 3, and 4 c. 1 and 4 d. 1, 2, 3, and 4 e. 3 and 4 only 10. Excretion of large volume of dilute urine requires: a. relative impermeability of the distal tubule to water. b. decreased ADH secretion. c. impermeability of the collecting tubule to water. d. transport of sodium and chloride ions out of the ascending loop of Henle. e. All of these are correct.
Explanation / Answer
6) is harmonallycontrolled in distal tubule segments
7) loop of henle
8) by a decrease in blood pressure
9) 3 and 4 only
10) all of the above statements are correct
