THORAX ABDOMEN AND PELVIS

Detailed explanation-1: -The right cardiac chambers account for most of the anterior or sternocostal surface of the heart. However, the walls of both ventricles constitute the inferior or diaphragmatic surface.

Detailed explanation-2: -The anterior of the heart is formed mainly by the right atrium and ventricle, due to the twisting of the heart during development, which causes the left atrium and ventricle to lie posteriorly.

Detailed explanation-3: -The right ventricle in the normal heart is the most anteriorly situated cardiac chamber since it is located immediately behind the sternum. It also marks the inferior border of the cardiac silhouette.

Detailed explanation-4: -The right ventricle is the most anteriorly positioned chamber of the heart, sitting directly posterior to the sternum. The distinct anatomical features of the right ventricle create an approximately 10-fold difference in vascular resistance between the right and left ventricular systems.