Autonomic nervous system (ANS)

Definition

The autonomic nervous system is a component of the peripheral nervous system that controls involuntary bodily functions, such as heart rate, digestion, and respiratory rate. It operates automatically without conscious effort and is divided into the sympathetic and parasympathetic nervous systems.

Related terms

Sympathetic Nervous System:

Activates the body's "fight or flight" response during perceived threats or emergencies.

Parasympathetic Nervous System:

Promotes "rest and digest" activities that occur when the body is at rest, conserving energy by slowing down the heart rate and increasing intestinal activity.

Peripheral Nervous System:

The part of the nervous system outside of the brain and spinal cord that connects the central nervous system to limbs and organs