During the early part of the menstrual cycle, ________ acts on granulosa cells, which ________. ________ acts on theca cells, which ________.
A. LH; synthesize androgens; FSH; convert androgens to estrogens
B. FSH; synthesize androgens; LH; convert androgens to estrogens
C. LH; convert androgens to estrogens; FSH; synthesize androgens
D. progesterone; synthesize androgens; LH; secrete estrogens
E. FSH; convert androgens to estrogens; LH; synthesize androgens
Answer: E
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Which of the following is the largest foramen in the human skeleton?
a) Acetabulum b) Obturator foramen c) Vertebral foramen d) Mental foramen e) Foramen magnum
Osteocytes
A) are giant cells with 50 or more nuclei. B) are immature bone cells. C) are the cells responsible for the production of new bone. D) secrete acids and enzymes. E) maintain normal bone structure by recycling the calcium salts in the bony matrix around themselves.
Which of the following might occur if you lacked temperature receptors in the leg?
A) You might burn your leg by putting it too close to the campfire. B) You would be insensitive to scratches if you walked through a briar patch wearing shorts. C) You might fall, because your brain isn't getting enough information about the leg and thigh muscles. D) You couldn't feel a bug bite your leg.
Which of the following is a NOT direct function of the Na+-K+ pump?
a. development of a Na+ gradient across the cell membrane b. development of a K+ gradient across the cell membrane c. regulation of cellular pH d. cell volume regulation e. all of these are direct functions of this pump.