-
- To save this word, you'll need to log in.
atrioventricular node
noun
: a small mass of tissue in the right atrioventricular region of higher vertebrates through which impulses from the sinus node are passed to the ventricles
Examples of atrioventricular node in a Sentence
Recent Examples on the Web
This electrical signal flows down to another group of cells called the atrioventricular node (AV node) and down to the ventricles.
—Christopher Lee, Verywell Health, 22 July 2024
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'atrioventricular node.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
Word History
First Known Use
1908, in the meaning defined above
Time Traveler
The first known use of atrioventricular node was
in 1908
Dictionary Entries Near atrioventricular node
Cite this Entry
“Atrioventricular node.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/atrioventricular%20node. Accessed 31 Oct. 2024.
Medical Definition
atrioventricular node
noun
: a small mass of tissue that is situated in the wall of the right atrium adjacent to the septum between the atria, passes impulses received from the sinoatrial node to the ventricles by way of the bundle of His, and in some pathological states replaces the sinoatrial node as pacemaker of the heart
More from Merriam-Webster on atrioventricular node
Britannica.com: Encyclopedia article about atrioventricular node
Love words? Need even more definitions?
Merriam-Webster unabridged
Share