ANATOMY

Detailed explanation-1: -The 3 types of muscle tissue are cardiac, smooth, and skeletal. Cardiac muscle cells are located in the walls of the heart, appear striped (striated), and are under involuntary control.

Detailed explanation-2: -Histologically, the heart is mainly composed of cardiomyocytes and connective tissue. Dense connective tissue with elastic fibers is present in the cardiac/fibrous skeleton.

Detailed explanation-3: -Cardiac muscles help in the contraction and relaxation of the heart. They are involuntary, striated muscle found in the walls of the heart.