MICROANATOMY

Detailed explanation-1: -The correct sequence, from smaller unit to larger unit in a muscle is A Muscle, Fascicles, Muscle cell, Myofibrils, Myofilaments B Myofibrils, Myofilaments, Muscle fibre, Fascicles, Muscles C Myofilaments, Myofibrils, Muscle fibre, Muscle fascicle, Muscle D Myofibrils, Muscle fibre, Myofilament, fascicles, Muscles.

Detailed explanation-2: -The levels of organization in skeletal muscle are molecular level, microscopic level, cell level, tissue level, and organ level. The skeletal muscle is made up of actin and myosin proteins at the molecular level.

Detailed explanation-3: -Hence, the organization of muscle tissue from the largest to the smallest is a muscle, fascicle, myofibril, and myofilaments.

Detailed explanation-4: -from largest to smallest: myofilament, fiber, fascicle, myofibril. The muscle fibers at the periphery of the muscle fascicles are smaller, whereas the fibers in the deepest part of the fascicle are of normal size. Organ level major skeletal muscles of the body. 4.