Identify the function of the parasympathetic nervous system.

A) It prepares the body for fighting or running away.
B) It aids in relaxing and healing the body.
C) It causes nervous tension and negative energy in the body.
D) It increases heart rate and blood pressure upon activation.

The parasympathetic nervous system is responsible for calming and relaxing the body. It works in opposition to the sympathetic nervous system, which prepares the body for action in response to stressors. The parasympathetic nervous system helps promote rest, digest, and heal mode in the body. This includes decreasing heart rate and blood pressure, increasing digestion and salivation, and promoting relaxation.