MUSCLE PHYSIOLOGY

Detailed explanation-1: -The outermost connective tissue sheath surrounding the entire muscle is known as epimysium. The connective tissue sheath covering each fasciculus is known as perimysium, and the innermost sheath surrounding individual muscle fiber is known as endomysium.

Detailed explanation-2: -Each skeletal muscle is formed from several bundled fascicles of skeletal muscle fibers, and each fascicle is surrounded by perimysium ("peri"-around). Each single muscle cell is wrapped individually with a fine layer of loose (areolar) connective tissue called endomysium ("endo"-inside).

Detailed explanation-3: -Each fasciculus consists of a number of muscle fibers, or muscle cells. Each muscle fiber is surrounded by a very thin layer of connective tissue, which is called endomysium (Fig. 5-1).