MICROANATOMY

Detailed explanation-1: -Each bundle of muscle fiber is called a fasciculus and is surrounded by a layer of connective tissue called the perimysium.

Detailed explanation-2: -The correct option is C fasciculus. A single bundle of muscle fibres is known as fasciculus (plural: fasciculi) and is surrounded by a layer of connective tissue called the perimysium.

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: -Myofibrils are long contractile fibres, groups of which run parallel to each other on the long axis of the myocytes (long single multinucleated cells that combine to form the muscle). The myocytes run parallel to each other on the long axis of the cell.

Detailed explanation-5: -Approximately 20–80 of these muscle fibers are grouped together in a parallel arrangement called a muscle fascicle or fiber bundle that is encapsulated by a perimysium, which is thicker than the epimysium enclosing each of the bundled muscle fibers.