The amygdala is the part of the limbic system that controls emotion, aggression, and the formation of emotional memory

The three layers of the inner cell mass develops into

a. different parts of the body of the embryo b. the fetus, the zygote, and the embryo c. the embryo, the placenta, and the umbilical cord d. different parts of the neural tube

By pairing the ringing of a bell with the presentation of meat, Pavlov trained dogs salivate to the sound of a bell even when no meat was presented. In this experiment, salivation to the bell was the ______

a. unconditioned stimulus c. conditioned stimulus b. unconditioned response d. conditioned response