Chemical messengers that often travel in the blood supply in order to affect target neurons that are quite distant are known as

a. neurotransmitters.
b. neuromodulators.
c. neurohormones

Precision and empirical evaluation are elements of which defining theme of behavior therapy?

a. Scientific b. Present Focus c. Active d. Learning

When a young person gains the ability to reproduce, he or she is said to have reached

a. skeletal maturation. c. puberty. b. gonatropic maturity. d. menarche.