An area of conducting tissue between the atria and the ventricles of the heart that conducts the normal electrical impulse from the atria to the ventricles. [ UBERON:cjm Wikipedia:Atrioventricular_node ]
术语信息
- FMA:9478
- TAO:0005070
- EMAPA:35153
- GAID:558
- SCTID:277688002
- BTO:0005689
- NCIT:C32161
- OpenCyc:Mx4rMfD91mMcEd2AAABQjYGu0g
- Wikipedia:Atrioventricular_node
- UMLS:C0004247 (ncithesaurus:Atrioventricular_Node)
- MESH:D001283
- MAT:0000498
- EHDAA2:0004183
- VHOG:0001474
- ZFA:0005070
- MA:0000095
- EFO:0000276
uberon_slim, efo_slim, pheno_slim, vertebrate_core
Three major adaptations, or 'novel cardiac components', that were not present in the ancestor chordate heart tube can be distinguished in the lower vertebrate heart: the atrium, ventricle, and possibly the muscular sinus venosus. Furthermore, within the ventricular component a compact outer myocardial component and an interiorly localized extensive trabecular component can be distinguished. The specific activation of the ventricle adds to its complexity as follows. The depolarizing impulse travels rapidly from the atrioventricular node toward the apex and then toward the conal region, achieving activation from apex to base.[uncertain][VHOG]
An area of conducting tissue between the atria and the ventricles of the heart that conducts the normal electrical impulse from the atria to the ventricles.
http://upload.wikimedia.org/wikipedia/commons/5/50/ConductionsystemoftheheartwithouttheHeart.png
http://upload.wikimedia.org/wikipedia/commons/9/92/Gray501.png
atrioventricular nodal muscle tissue
AV node
Aschoff-Tawara node
nodus atrioventricularis
AV nodal muscle tissue
node of Tawara
A-V node
atriovetricular node
nodus atrioventricularis
downstream pacemaker
atrio-ventricular node