![]() The autonomic nervous system is traditionally partitioned into the sympathetic system and the parasympathetic system, based on the region of the brain or spinal cord in which the autonomic nerves have their origin (see illustration). See also: Cardiovascular system Central nervous system Digestion Gland Metabolism Muscle Muscular system Nervous system (vertebrate) Thermoregulation ![]() The system regulates visceral processes involuntarily including those associated with cardiovascular activity, digestion, metabolism, and thermoregulation (bodily temperature). As a distinct system, the autonomic nervous system functions primarily at a subconscious level to innervate smooth muscle, cardiac muscle, and glands. The PNS is further divided into the somatic nervous system and the autonomic nervous system. The autonomic nervous system is a component of the peripheral nervous system, or PNS, which, along with the central nervous system, or CNS, represents the two main divisions of the nervous system. The part of the nervous system that controls visceral (internal organ) functions of the body. The enteric nervous system is sometimes considered a branch of the autonomic nervous system but can also be understood as a distinct nervous system dedicated to digestion. ![]() The autonomic nervous system is traditionally partitioned into the sympathetic system and the parasympathetic system, based on the region of the brain or spinal cord in which the autonomic nerves have their origin. A component of the peripheral nervous system, the autonomic nervous system controls visceral functions of the body, including those associated with cardiovascular activity, digestion, metabolism, and thermoregulation.įunctioning primarily at a subconscious level, the autonomic nervous system innervates smooth muscle, cardiac muscle, and glands.
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