GENERAL HISTOLOGY

Detailed explanation-1: -Skeletal muscle is a highly organized tissue composed of bundles of muscle fibers called myofibers which contain several myofibrils. Each myofiber represents a muscle cell with its basic cellular unit, the sarcomere. Bundles of myofibers form fascicles, and bundles of fascicles form the muscle tissue.

Detailed explanation-2: -A myofibril is composed of many sarcomeres running along its length; thus, myofibrils and muscle cells contract as the sarcomeres contract.

Detailed explanation-3: -muscle bundle. A group of muscle fibres ensheathed by connective tissue (perimysium). Last updated on March 4th, 2021.

Detailed explanation-4: -Excitation–contraction coupling is the process by which a muscular action potential in the muscle fiber causes the myofibrils to contract.