atrioventricular node

noun

Definition of atrioventricular node

  1. :  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

First Known Use of atrioventricular node

1908


Medical Dictionary

atrioventricular node

noun

Medical Definition of atrioventricular node

  1. :  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


Learn More about atrioventricular node


Seen and Heard

What made you want to look up atrioventricular node? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

to relieve or lessen

Get Word of the Day daily email!

Test Your Vocabulary

Time Traveler Quiz: Which Word Came First?

  • time-traveler-quiz-which-word-came-first
  • Which came first?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
Add Diction

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!