GENERAL HISTOLOGY

Detailed explanation-1: -The apex of the heart is its sharpest point; it is located at the bottom of the heart, angled down and forward. The base of the heart is its superior aspect, but the base still retains a support function as it connects the heart to suspensory tissues.

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: -STRUCTURE OF THE HEART Because of rotation during fetal development, the apex of the heart (tip of the cone) is at its bottom and lies left of the midline. The base is at the top, where the great vessels enter the heart and lies posterior to the sternum (Fig.

Detailed explanation-4: -The inferior tip of the heart, the apex, lies just to the left of the sternum between the junction of the fourth and fifth ribs near their articulation with the costal cartilages.