Sam is highly relaxed. His blood pressure and heart rate are lower than usual. This relaxation response was most likely the result of activity in his

A) somatic nervous system.
B) sympathetic nervous system.
C) parasympathetic nervous system.
D) central nervous system.

Somatic Nervous System

A part of the peripheral nervous system that controls voluntary movements of the body and transmits sensory information to the central nervous system.

Sympathetic Nervous System

Part of the autonomic nervous system responsible for the body's 'fight or flight' response to stress.

Parasympathetic Nervous System

A branch of the autonomic nervous system responsible for conserving energy and bringing the body to a restful state.