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cardiac skeleton

Go to external page http://purl.obolibrary.org/obo/UBERON_0004292

Dense connective tissue that separates the atria from the ventricles and provides physical support for the heart. [ http://en.wikipedia.org/wiki/Cardiac_skeleton http://amigo.geneontology.org/amigo/term/GO:0003204 ]

Term info

Label

cardiac skeleton

Synonyms
  • cardiac fibrous skeleton
  • fibrous skeleton of heart
  • heart fibrous skeleton
  • skeleton of heart
database cross reference
depicted by

http://upload.wikimedia.org/wikipedia/commons/5/50/Gray495.png

function notes

It is not a true skeleton, but it does provide structure and support for the heart, as well as isolating the atria from the ventricles. This allows the AV node and AV bundle to delay the wave of depolarisation such that the atria can contract and assist in ventricular filling before the ventricles themselves depolarise and contract (the AV bundle is the only part of the conduction system that passes from the atria to the ventricles in a normal heart). It also allows the valves (bicuspid, tricuspid, semilunar) to keep open by giving them structural support[WP]

has related synonym

trigona fibrosa, anulus fibrosus dexter cordis, trigonum fibrosum dextrum cordis, anulus fibrosus sinister cordis, trigonum fibrosum sinistrum cordis

id

UBERON:0004292