Autonomic Nervous System (ANS): What It Is and How It Works

The autonomic nervous system (ANS) is a component of the nervous system responsible for regulating involuntary bodily functions, such as heart rate, digestion, respiratory rate, and pupillary response. It consists of two main divisions: the sympathetic and parasympathetic systems, which often work in opposition to maintain the body's internal balance or homeostasis.

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PDF) Autonomic Nervous System