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单词 autonomic nervous system
释义

WordReference Random House Learner's Dictionary of American English © 2024
au•to•nom•ic nerv•ous sys•tem /ˌɔtəˈnɑmɪk ˈnɜrvəs ˌsɪstəm/USA pronunciation  n. [countable]
  1. Anatomythe system of nerves that controls the involuntary functions of the heart, blood vessels, certain muscles, glands, and other parts of the body.
See -nom-1.
WordReference Random House Unabridged Dictionary of American English © 2024
au′tonom′ic nerv′ous sys′tem, 
  1. Anatomythe system of nerves and ganglia that innervates the blood vessels, heart, smooth muscles, viscera, and glands and controls their involuntary functions, consisting of sympathetic and parasympathetic portions.
  • 1895–1900

Collins Concise English Dictionary © HarperCollins Publishers::
autonomic nervous system n
  1. the section of the nervous system of vertebrates that controls the involuntary actions of the smooth muscles, heart, and glands. It has two divisions: the sympathetic and the parasympathetic
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更新时间：2025/7/25 6:54:53