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 small or slender bundle (as of pine needles or nerve fibers) : one of the divisions of a book published in parts.

Detailed explanation-3: -Fascicles are covered by a layer of connective tissue called perimysium (see Figure 10.2. 1). Fascicle arrangement is correlated to the force generated by a muscle and affects the muscle’s range of motion.

Detailed explanation-4: -Single-unit muscle has its muscle fibers joined by gap junctions so that the muscle contracts as a single unit. This type of smooth muscle is found in the walls of all visceral organs except the heart (which has cardiac muscle in its walls), and so it is commonly called visceral muscle.