Postganglionic axons are
A. myelinated.
B. unmyelinated.
C. sometimes myelinated and sometimes unmyelinated.
B
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Amino acids such as alanine contain hydrocarbons as side groups, and these amino acids engage in hydrophobic interactions with each other. Such amino acids are
A. charged.?B. hydrostatic.?C. polar.?D. nonpolar.?E. polyunsaturated.
Which of the following muscles does not depress the hyoid?
A. Sternohyoid B. Sternothyroid C. Thyrohyoid D. Mylohyoid
Which of the following changes occur during the third trimester?
A) Completion of pulmonary branching and alveolar formation. B) Formation of the plicae of the intestines. C) Completion of the formation of the nephrons. D) In male fetuses, the testes descend. E) All of the answers are correct.
Three discrete types of muscle fibers are identified on the basis of their fuel supply, oxygen supply, and tension. Which of the following athletic endeavors best represents the use of slow-twitch fibers?
A. Mountain climbing B. A high jump C. Swinging a baseball bat D. Lifting weights