ANATOMY

Detailed explanation-1: -The inferior surface of the right ventricle accounts for a small part of the diaphragmatic surface of the heart. It sits over the central tendon of the diaphragm and a small muscular portion of the left hemidiaphragm. The interventricular septum functions as the posterior and left wall of the right ventricle.

Detailed explanation-2: -The apex (the most inferior, anterior, and lateral part as the heart lies in situ) is located on the midclavicular line, in the fifth intercostal space. It is formed by the left ventricle. The base of the heart, the posterior part, is formed by both atria, but mainly the left.

Detailed explanation-3: -The inferior part of the heart is called the apex (A) because it comes to a point, like the apex of a cone. The superior part of the heart is referred to as the base (B). The major vessels of the heart are found at the base of the heart, along with the upper chambers, the right atrium (C) and left atrium (D).

Detailed explanation-4: -Your heart chambers are four hollow spaces within your heart. There are two atria (upper chambers) called your right atrium and left atrium. In addition, there are two ventricles (lower chambers) called your right ventricle and left ventricle.

Detailed explanation-5: -The two atria are thin-walled chambers that receive blood from the veins. The two ventricles are thick-walled chambers that forcefully pump blood out of the heart.