Septum intermedium
Encyclopedia
Endocardial cushions
project into the atrial canal
, and, meeting in the middle line, unite to form the septum intermedium which divides the canal into two channels, the future right and left atrioventricular orifices.
Endocardial cushions
Atrioventricular cushions or endocardial cushions refers to a subset of cells in the primordial heart that play a vital role in proper heart septation.They develop on the atrioventricular canal.During development the heart starts out as a tube...
project into the atrial canal
Atrial canal
In the developing heart, the constriction between the atrium and ventricle constitutes the atrioventricular canal or atrial canal, and indicates the site of the future atrioventricular valves.-External links:*...
, and, meeting in the middle line, unite to form the septum intermedium which divides the canal into two channels, the future right and left atrioventricular orifices.