ANATOMY

Detailed explanation-1: -Each bundle of muscle fiber is called a fasciculus and is surrounded by a layer of connective tissue called the perimysium . Within the fasciculus, each individual muscle cell, called a muscle fiber, is surrounded by connective tissue called the endomysium.

Detailed explanation-2: -The endomysium is a delicate network of connective tissue, which surrounds individual muscle fibres and contains the vessels and nerves that supply the muscle fibres as well as the proteoglycan matrix for ion flux and metabolic exchange.

Detailed explanation-3: -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-4: -The endomysium, meaning within the muscle, is a wispy layer of areolar connective tissue that ensheaths each individual muscle fiber, or muscle cell. It also contains capillaries and nerves. It overlies the muscle fiber’s cell membrane: the sarcolemma.

Detailed explanation-5: -Each muscle fiber is surrounded by a thin layer of connective tissue called the endomysium.