Calcitonin
A. stimulates bone resorption (breakdown).
B. is synthesized by the skin, liver, and kidneys.
C. increases blood calcium.
D. stimulates osteoblast activity.
Answer: D
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The tall slender body shape that helps to dissipate heat in people native to equatorial regions is an example of
A. homeostasis. B. phase shift. C. set point resetting. D. an adaptation. E. acclimatization.
The anal canal
A. contains tubular glands called crypts. B. begins at the sigmoid colon and ends at the rectum. C. contains many goblet cells. D. has an external sphincter composed of smooth muscle. E. has an internal sphincter composed of smooth muscle.
A decrease in muscle bulk due to a lack of exercise is called ____
a. dystrophy b. atrophy c. hypertrophy d. anatrophy
The prefrontal cortex
A. matures soon after birth. B. has axons that continue to myelinate well into our 20s. C. processes raw visual information, putting it into context. D. is primarily responsible for understanding spoken or written language.