the atrial part of middle layer of the heart, comprised of involuntary muscle [ MP:0010493 ]

Synonyms: atrial myocardium atrium myocardium

This is just here as a test because I lose it

Term information


efo_slim, pheno_slim, vertebrate_core

has related synonym

atrium cardiac muscle

homology notes

As noted, the hearts of birds and mammals have four chambers that arises from the two chambers (atrium and ventricle) of the fish heart.[uncertain][VHOG]