accelerator fiber

accelerator fiber definition - medical

accelerator fiber

noun
Any of the postganglionic sympathetic nerve fibers that originate in the superior middle and inferior cervical ganglia of the sympathetic trunk and convey impulses to the heart that tend to increase the rapidity and force of the cardiac pulsations.

The American Heritage® Medical Dictionary Copyright © 2009 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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