Atrioventricular node
E432889
The atrioventricular node is a specialized cluster of cardiac cells that relays and delays electrical impulses between the atria and ventricles to coordinate the heart’s rhythm.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Atrioventricular node canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4332163 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Atrioventricular node Context triple: [Heart, hasPart, Atrioventricular node]
-
A.
Sinoatrial node
The sinoatrial node is the heart’s natural pacemaker, a specialized cluster of cells that initiates and regulates the heartbeat by generating electrical impulses.
-
B.
Atrial septum
The atrial septum is the wall of tissue that separates the heart’s left and right atria, helping maintain proper direction and separation of blood flow between them.
-
C.
Purkinje fibers
Purkinje fibers are specialized cardiac muscle fibers that rapidly conduct electrical impulses through the ventricles, coordinating their synchronized contraction.
-
D.
Tricuspid valve
The tricuspid valve is one of the heart’s four valves that regulates blood flow between the right atrium and right ventricle, preventing backflow during ventricular contraction.
-
E.
Right ventricle
The right ventricle is one of the heart’s four chambers that pumps deoxygenated blood to the lungs via the pulmonary artery.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Atrioventricular node Target entity description: The atrioventricular node is a specialized cluster of cardiac cells that relays and delays electrical impulses between the atria and ventricles to coordinate the heart’s rhythm.
-
A.
Sinoatrial node
The sinoatrial node is the heart’s natural pacemaker, a specialized cluster of cells that initiates and regulates the heartbeat by generating electrical impulses.
-
B.
Atrial septum
The atrial septum is the wall of tissue that separates the heart’s left and right atria, helping maintain proper direction and separation of blood flow between them.
-
C.
Purkinje fibers
Purkinje fibers are specialized cardiac muscle fibers that rapidly conduct electrical impulses through the ventricles, coordinating their synchronized contraction.
-
D.
Tricuspid valve
The tricuspid valve is one of the heart’s four valves that regulates blood flow between the right atrium and right ventricle, preventing backflow during ventricular contraction.
-
E.
Right ventricle
The right ventricle is one of the heart’s four chambers that pumps deoxygenated blood to the lungs via the pulmonary artery.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
cardiac conduction structure
ⓘ
component of the cardiac conduction system ⓘ specialized cardiac tissue ⓘ |
| associatedWithCondition |
AV nodal block
ⓘ
atrioventricular nodal reentrant tachycardia ⓘ first-degree atrioventricular block ⓘ second-degree atrioventricular block ⓘ third-degree atrioventricular block ⓘ |
| bloodSupply |
atrioventricular nodal artery
NERFINISHED
ⓘ
left circumflex artery NERFINISHED ⓘ right coronary artery ⓘ |
| canBeDamagedBy |
cardiac surgery
ⓘ
myocardial infarction ⓘ |
| canBeTargetOf | catheter ablation ⓘ |
| clinicalRelevance | key site for control of ventricular rate in atrial fibrillation ⓘ |
| composedOf |
slow-response cardiac myocytes
ⓘ
specialized nodal cells ⓘ |
| correspondsToECGComponent | PR interval ⓘ |
| developsFrom | embryonic atrioventricular canal region ⓘ |
| ensures | completion of atrial contraction before ventricular contraction ⓘ |
| foundIn | mammals ⓘ |
| function |
coordinates atrial and ventricular contraction timing
ⓘ
delays conduction of cardiac impulses ⓘ electrical relay between atria and ventricles ⓘ |
| hasProperty |
automaticity
ⓘ
decremental conduction ⓘ slow conduction velocity ⓘ |
| hasSynonym |
AV node
NERFINISHED
ⓘ
atrioventricular junctional tissue ⓘ |
| innervatedBy |
parasympathetic fibers
ⓘ
sympathetic fibers ⓘ |
| locatedIn |
interatrial septum
ⓘ
right atrium NERFINISHED ⓘ |
| locatedNear |
opening of the coronary sinus
ⓘ
septal leaflet of the tricuspid valve ⓘ |
| modulatedBy | autonomic nervous system ⓘ |
| parasympatheticEffect | slows AV nodal conduction ⓘ |
| partOf |
cardiac conduction system
ⓘ
heart ⓘ |
| prevents |
1:1 conduction of very fast atrial arrhythmias
ⓘ
excessively rapid conduction from atria to ventricles ⓘ |
| receivesImpulseFrom |
atrial myocardium
ⓘ
sinoatrial node NERFINISHED ⓘ |
| sendsImpulseTo |
atrioventricular bundle
ⓘ
bundle of His NERFINISHED ⓘ |
| species | human ⓘ |
| sympatheticEffect | increases AV nodal conduction ⓘ |
| typicalDelay | about 0.1 seconds ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Atrioventricular node Description of subject: The atrioventricular node is a specialized cluster of cardiac cells that relays and delays electrical impulses between the atria and ventricles to coordinate the heart’s rhythm.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.