The most preventable cause of death in the U.S. is the use of ____

The muscular movements that are involved in laughter are controlled by neurons within the

a. hypothalamus. b. anterior cingulate cortex. c. insular cortex. d. substantia nigra. e. corpus callosum.

Feelings of fear in humans are produced by electrical stimulation of the ________

Fill in the blank with the appropriate word.