MICROANATOMY

Detailed explanation-1: -Myocytes contain thousands of myofibrils. Each Myofibril is composed of numerous sarcomeres, the functional contracile region of a striated muscle.

Detailed explanation-2: -A myofibril (also known as a muscle fibril or sarcostyle) is a basic rod-like organelle of a muscle cell. Skeletal muscles are composed of long, tubular cells known as muscle fibers, and these cells contain many chains of myofibrils.

Detailed explanation-3: -Most of the intracellular space, however, is taken up by rod-like myofibrils-cylindrical protein structures. Each muscle fiber contains hundreds or even thousands of myofibrils that extend from one end of each muscle fiber to the other.

Detailed explanation-4: -Skeletal and cardiac muscles are known as striated muscles, because the filaments of actin and myosin that power their contraction are organized into repeating arrays, called sarcomeres, that have a striated microscopic appearance.