As the pitch of a sound gets higher, displacements of the basilar membrane
A. occur closer to the oval window.
B. become smaller in amplitude.
C. become greater in amplitude.
D. occur closer to the helicotrema.
E. occur uniformly throughout the membrane.
Answer: A
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TRH directly controls the release of _______________ from the ___________ gland
Fill in the blank(s) with correct word
T is to ________ as B is to ________
A) top; bottom B) thymus-dependent; bone marrow-derived C) thyroid; bowel D) non-thymus-dependent; bottom E) None of the answers is correct.
Which of the following is derived from endoderm?
A. brain B. muscle C. epidermis of the skin D. lining of the digestive tract E. cardiovascular system
Blood is drained from the lower portion of the large intestine by the
A) celiac trunk. B) gastric vein. C) superior mesenteric vein. D) inferior mesenteric vein. E) inferior vena cava.