MEDICAL 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 fascicle is a discrete bundle of muscle cells, segregated from the rest of the muscle by a connective tissue sheath. A muscle fiber is an elongated multinucleate cell; it has a banded (striated) appearance. One of the connective tissue sheaths that is like the “overcoat".

Detailed explanation-3: -Muscle fibres are arranged into individual bundles, each called a fascicle, within each skeletal muscle, by a middle layer of connective tissue called the perimysium.

Detailed explanation-4: -Function. In the heart specialized cardiac muscle cells transmit electrical impulses from the atrioventricular node (AV node) to the Purkinje fibers – fascicles, also referred to as bundle branches.

Detailed explanation-5: -The three types of muscle fibres are slow oxidative (SO), fast oxidative (FO) and fast glycolytic (FG). Most skeletal muscles in a human contain(s) all three types, although in varying proportions.