Allen is in his house alone late at night when he hears a loud, frightening noise. His
heart begins pounding, his senses sharpen, and his muscles tense up. Allen's reaction
is due to the activity of his ______ nervous system.
a. sympathetic c. somatic
b. parasympathetic d. central
Question 2
The autonomic nervous system has two branches, the _________.
a. central and peripheral c. somatic and sympathetic
b. somatic and peripheral d. sympathetic and parasympathetic
