The primary function of adrenocorticotropic hormone (ACTH) is to
A. regulate salt and water balance by acting on the renal system.
B. stimulate glucocorticoid release from the adrenal glands.
C. stimulate adrenaline release from the adrenal medulla.
D. stimulate cell growth and cell division in muscle and bone.
E. stimulate the development of the folds on the surface of the brain.
B
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Which is not a reason gas exchange is efficient at the blood air barrier?
A) Partial pressure differences are substantial. B) Distance is short. C) Surface area is large. D) Gap junctions facilitate fast movement. E) Gases are lipid soluble.
In examining a male patient you place your finger in his superficial inguinal ring and ask him to cough. You then feel a sudden impulse medial to your finger. You conclude that your patient most likely has:
A) a femoral hernia. B) a direct inguinal hernia. C) an undescended testis. D) a supravesical hernia. E) testicular cancer. Ans: B
Erection of the penis results from ________.
A) a sympathetic reflex B) parasympathetic activation of the bulbourethral glands C) dilation of the veins in the penis D) a parasympathetic reflex
Which of the following is NOT a lobe of the cerebrum?
A. Temporal lobe B. Frontal lobe C. Occipital lobe D. Sphenoid lobe