SINOATRIAL NODE

Pronunciation (US):

(GB):

 Dictionary entry overview: What does sinoatrial node mean? 

• SINOATRIAL NODE (noun)
  The noun SINOATRIAL NODE has 1 sense:

1. a specialized bit of heart tissue that controls the heartbeat

  Familiarity information: SINOATRIAL NODE used as a noun is very rare.

 Dictionary entry details 

• SINOATRIAL NODE (noun)

Sense 1

Meaning:

A specialized bit of heart tissue that controls the heartbeat

Classified under:

Nouns denoting body parts

Synonyms:

cardiac pacemaker; pacemaker; SA node; sinoatrial node

Hypernyms ("sinoatrial node" is a kind of...):

cardiac muscle; heart muscle (the muscle tissue of the heart; adapted to continued rhythmic contraction)

 Context examples 

An electrocardiographic finding of an atrial rhythm which originates from the sinoatrial node that is considered normal for the population.

(Normal Sinus Rhythm, NCI Thesaurus/CDISC)

A disorder characterized by an electrocardiographic finding of atrial tachycardia that does not originate from the sinoatrial node.

(Ectopic Atrial Tachycardia, NCI Thesaurus)

An electrocardiographic finding in which impaired conduction or automaticity within the sinus node results in the failure of impulse transmission from the sinoatrial node.

(Exit Block by ECG Finding, NCI Thesaurus/CDISC)

An electrocardiographic finding of a rhythm originating above the ventricles at a site other than the sinoatrial node.

(Ectopic Supraventricular Rhythm by ECG Finding, NCI Thesaurus)

Glycopyrrolate binds to peripheral muscarinic receptors and inhibits cholinergic transmission present in the autonomic effector cells of smooth muscle, cardiac muscle, the sinoatrial node, the atrioventricular node, exocrine glands, and in the autonomic ganglia.

(Glycopyrrolate, NCI Thesaurus)