Marika Is Making a Chart to Serve as a Study

Multiple Choice

Marika is making a chart to serve as a study aid for her upcoming psychology quiz. She makes a list of different types of nervous system chemicals and their functions. She writes that the function of endorphins is to:

A) enable neurons to excite or inhibit each other.
B) affect the functioning of target organs and tissue.
C) promote digestion and regulate metabolism.
D) modulate the effects of neurotransmitters.