What is the name of the protective insulation that surrounds parts of neurons and speeds the transmission of electrical impulses along brain cells?

The leading causes of death in middle age are ____________ and _____________.

Fill in the blank(s) with the appropriate word(s).

Research discussed in the chapter suggests that a specific drug can speed up the extinction of a phobia if taken during virtual reality treatments. This drug is believed to enhance a certain type of receptor in the _________

a. frontal lobe. b. hypothalamus. c. amygdala. d. olfactory gland.