MUSCLE PHYSIOLOGY

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: -A perimysium surrounds an individual fascicle. An individual muscle fiber in a fascicle is invested in an endomysium.

Detailed explanation-3: -Muscle fibres are grouped together in muscle bundles or fascicles and are surrounded by perimysium, or fibro-adipose septa, which contains vessels and nerves. A thicker connective tissue sheath, the epimysium, surrounds the whole muscle. Muscles lie deep to the deep fascia.