logo

Video encyclopedia

Autonomic nervous system

2:03

Two Minutes of Anatomy: Autonomic Nervous System

3:04

The Autonomic Nervous System

3:57

Autonomic Nervous System 7- Review VM Anatomy

3:50

Schneid Guide to Autonomic Nervous System Anatomy Framework

2:21

Autonomic Nervous System

The autonomic nervous system (ANS), formerly the vegetative nervous system, is a division of the peripheral nervous system that supplies smooth muscle and glands, and thus influences the function of internal organs. The autonomic nervous system is a control system that acts largely unconsciously and regulates bodily functions such as the heart rate, digestion, respiratory rate, pupillary response, urination, and sexual arousal. This system is the primary mechanism in control of the fight-or-flight response.