Low dosages of aspirin inhibit clotting by blocking the formation of which of the following?
A) vitamin K
B) factor X
C) factor VIII
D) thrombin
E) thromboxane A2
Answer: E) thromboxane A2
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Which of the following structures is correctly matched with its function?
A) Ascending limb of the loop of Henle: major site of secretion of K+ B) Descending limb of the loop of Henle: major site for transport of solutes C) Proximal tubule: site of secretion of organic anions and cations D) Distal tubule: main site of reabsorption of Ca2+and Mg2+
The kidneys secrete additional H+ and conserve HCO3- to compensate for increased H+ concentration in the body fluids
Indicate whether the statement is true or false
Where in the male reproductive system would you expect to find the most mature spermatozoa?
A) in the seminiferous tubules B) in the head of the epididymis C) in the ductus deferens and ejaculatory duct D) in the seminal gland E) in the prostate gland
Progesterone
A. is produced by the corpus luteum. B. exerts negative feedback over testosterone secretion. C. inhibits the formation of secondary sexual characteristics. D. All apply.