Which sleep-related phenomena would appear to be opposites?

The process of neurogenesis occurs when ________

a. neurons convert themselves to stem cells. b. neurons divide to create two new neurons. c. immature stem cells give birth to new neurons. d. neurons convert themselves to glial cells.

The deer waits motionlessly, hidden in the thicket as the band of hunters approach. As they get closer, their dogs bark, picking up the scent of their prey

In a futile effort to escape, the deer bolts. Which of the following most accurately describes the nervous system of the hunted deer at this point? a. Its sympathetic nerve fibers are more active than its parasympathetic nerve fibers. b. Its parasympathetic nerve fibers are more active than its sympathetic nerve fibers. c. Both its sympathetic and parasympathetic nerve fibers are equally active. d. Neither its sympathetic nor its parasympathetic nerve fibers are aroused.