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reticular formation

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noun
  1. a network of neurons in the brainstem involved in consciousness, regulation of breathing, the transmission of sensory stimuli to higher brain centers, and the constantly shifting muscular activity that supports the body against gravity.
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Origin of reticular formation

First recorded in 1885–90
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

reticular formation in Medicine

reticular formation

n.
  1. A massive but vaguely delimited neural apparatus composed of closely intermingled gray and white matter, extending the length of the spinal cord and into the diencephalon, and having a dominant role in the central control of autonomic and endocrine functions, bodily posture, skeletomuscular reflex activity, and general behavioral states.reticular substance
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

reticular formation in Science

reticular formation

[rĭ-tĭkyə-lər]
  1. A complex network of neurons and axons that is located throughout the brainstem. The reticular formation regulates consciousness, sleep, and wakefulness.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.