sinus node
Americannoun
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Then they zap these intruders, erecting a line of defense so my sinus node, the heart's steady pacemaker, can do its work uninterrupted.
From Salon • Aug. 28, 2022
Over the course of a day, a person’s heart beats about 100,000 times, and each beat begins with an electrical signal generated in the sinus node in the heart’s upper right chamber.
From Washington Post • Feb. 23, 2018
It has been definitely determined that the impulse to cardiac contraction originates in the sinus node, a collection of differentiated nerve cells situated at the junction of the superior vena cava with the right auricle.
From Arteriosclerosis and Hypertension: with Chapters on Blood Pressure, 3rd Edition. by Warfield, Louis Marshall
This is called the sinus node, or the sino-auricular node, and consists of a small bundle of fibers resembling muscle tissue.
From Disturbances of the Heart by Osborne, Oliver T. (Oliver Thomas)
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
