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bundle of His

[his] /hɪs/
noun, Anatomy
Origin
after Wilhelm His (1863-1934), Swiss physician
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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bundle-his in Science
bundle of His
  (hĭs)   
The bundle of cardiac muscle fibers that passes from the atrioventricular node to the interventricular septum and then the ventricles. It conducts the electrical impulses that regulate the heartbeat from the right atrium to the left and right ventricles. The bundle of His is named after its discoverer, German cardiologist Wilhelm His (1836-1934).
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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