The atrium and ventricle of same side are also separated by a thick fibrous tissue called
Mitral valve
Purkinje fibres
Atrio-ventricular septum
Tricuspid septum
As we learned
Structure of heart -
atrio-ventricular septum
- wherein
The atrium and the ventricle of the same side are also separated by a thick fibrous tissue called the atrio-ventricular septum.
Correct option is 3