Most of the cranial nerves originate from the
a. brain stem.
b. cerebellum.
c. cerebral cortex.
d. hypothalamus.
e. thalamus.
A
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At the end of inspiration, how much of the air in the alveoli is fresh air?
a. about 3% b. about 5% c. about 8% d. about 10% e. about 13%
Spermatogenesis
a. occurs in the epididymis b. begins with a spermatozoan c. is controlled by both testosterone and FSH d. has all of the above characteristics e. has none of the above characteristics
Which of the following statements concerning smooth muscle is incorrect?
a. smooth muscle can develop less tension per unit cross-sectional area compared to skeletal muscle. b. smooth muscle can maintain tension with comparatively less ATP consumption than skeletal muscle. c. smooth muscle lacks troponin and tropomyosin. d. the range of lengths over which smooth muscle is able to develop near maximal tension is much greater than for skeletal muscle. e. a hollow organ enclosed by smooth muscle accommodates variable volumes with little change in the pressure exerted on the contents.
The scapula articulates with the ________.
A. humerus and the clavicle B. humerus, the clavicle, and the ribs C. humerus and the ribs D. ribs and the clavicle