Which analgesic relieves pain by mimicking the action of endorphins?

a. aspirin
b. ziconotide
c. NSAIDS
d. morphine
e. acetaminophen


ANSWER: d

Biology & Microbiology

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The gametophyte is green and nutritionally independent in  

A.  mosses, liverworts, and ferns. B.  angiosperms. C.  gymnosperms. D.  tracheophytes. E.  seed plants.

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Toward the end of the Proterozoic eon, multicellular animals emerged. The first animals were

A. Fish. B. Reptiles. C. Invertebrates. D. Chordates. E. Tetrapods.

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Glands are derived from _____ tissue

a. epithelial c. muscle b. connective d. nervous

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Blood flow distribution can be adjusted by

adjusting the diameter of the

a. arteries. b. capillaries. c. arterioles. d. veins. e. venules.

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