Norepinephrine is also produced in the amygdala, where it functions as a neurotransmitter

Some of the most dramatic physiological changes during sexual excitement are due to vasocongestion, which refers to

a. increased muscular tension. b. elevated respiration rates. c. engorgement of blood vessels. d. decreased neurotransmitter activity.

The ________, or how much of a teratogen that the fetus receives, is an important general principle of teratogenic influence

a. dose b. strength c. timing d. sensitive period