The superior surface of the talus articulating with the tibia is the
A. head.
B. trochlea.
C. posterior process.
D. None of the above
Answer: B
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The membrane of a cell is composed of a ________ bilayer.
Fill in the blank(s) with the appropriate word(s).
The uterine cycle begins with
A) a surge of LH and FSH. B) proliferation of the functional layer of the endometrium. C) the onset of the menses. D) ovulation. E) None of the answers are correct
Urea
a. is a waste product resulting from the breakdown of protein. b. is passively reabsorbed at the end of the proximal tubule down a urea concentration gradient created by the osmotic-induced reabsorption of water from the proximal tubule. c. recycling between the late portion of the collecting tubule and the long loops of Henle contributes to medullary hypertonicity. d. both (a) and (b) above. e. all of these answers.
Which of the following cell types is diploid?
A. spermatid B. mature sperm C. primary spermatocyte D. secondary spermatocyte E. spermatozoa