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nervous system
[ nur-vuhs sis-tuhm ]
noun
- the system of nerves and nerve centers in an animal or human, including the brain, spinal cord, nerves, and ganglia.
- a particular part of this system.
nervous system
noun
- the sensory and control apparatus of all multicellular animals above the level of sponges, consisting of a network of nerve cells See neurone See also central nervous system
nervous system
- The system of neurons and tissues that regulates the actions and responses of vertebrates and many invertebrates. The nervous system of vertebrates is a complex information-processing system that consists mainly of the brain, spinal cord, and peripheral and autonomic nerves. It receives chemical information from hormones in the circulating blood and can also regulate secretions of the endocrine system by the action of neurohormones. The nervous systems of invertebrates vary from a simple network of nerves to a complex nerve network under the control of a primitive brain.
- See also autonomic nervous system
Word History and Origins
Origin of nervous system1
Example Sentences
These are often samples from parts of the body that are normally sterile sites, where bacteria are not usually found such as the brain, central nervous system, liver and eye.
It can be dizzying trying to keep up with the news and a jolt to your nervous system if you see a major drop in your portfolio balance.
When the body hyperventilates, the sympathetic nervous system is activated, triggering the body’s “fight or flight” response.
Lead is a heavy metal linked to serious health problems including damage to the brain and nervous system, as well as digestive, reproductive and cardiovascular issues, according to the Environmental Protection Agency.
Instead, she draws upon indigenous wisdom and yogic philosophies to focus on how horses can aid with nervous system regulation.
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