A drug company creates a drug that acts as an antagonist to the human chorionic gonadotropin (hCG) receptor. The effect of this drug, if given in early pregnancy would be
A. degeneration of the corpus luteum and declining levels of progesterone and estrogen.
B. secretion of large quantities of FSH and LH.
C. secretion of large quantities of progesterone and estrogen.
D. secretion of cortisol.
E. secretion of large quantities of GnRH.
Answer: A
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A) anterior cerebral artery. B) common carotid artery. C) external carotid artery. D) basilar artery. E) middle cerebral artery.
The amount of blood ejected by a ventricle during a single beat is called the
A) heart rate. B) stroke volume. C) cardiac output. D) end diastolic volume. E) end systolic volume.
Skin cells that undergo random changes as a person ages provide an example of a(n) _____ mutation.?
A) ?chromosomal B) ?gene C) ?somatic D) ?inherited
The blood vessel that supplies blood to the liver, stomach, and spleen is the
A) gastric artery. B) renal artery. C) superior mesenteric artery. D) celiac trunk. E) common iliac artery.