Posterior surface of hea is formed by -
Ans. is 'b>a' i.e., LA>RA Surfaces of the hea Anterior (sternocostal) surface :- Formed mostly by right ventricle (major) and right auricle and paly by left ventricle and left auricle. Inferior (diaphragmatic) surface :- It is formed by left ventricle (left 2/3) and right ventricle (right 1/3). It is traversed by posterior interventricular groove (PIV) containing PIV branch of RCA. Base (posterior surface) :- Formed mainly by left atrium and paly by right atrium. It is separated from T5 to T, veebrae by pericardium, oblique pericardial sinus, esophagus and descending thoracic aoa. Right surface :- Mainly by right atrium. Left surface :- Mainly by left ventricle and paly by left auricle.
RA
LA
LV
RV