Skeletal Muscle

Epimysium - connective tissue capsule

Perimysium - a branching connective tissue within the muscle tissue

Endomysium - the muscle cells themselves are individually wrapped by endomysium

Myofibril - the muscles cells are filled with cylindrical structures called myofibrils

Myofilaments - Inside the myofibril, they are responsible for the contraction of myofibrils

Sarcomere - The smallest functional unit of skeletal muscle. The segment of a muscle cell between two z-lines.

Actin - Thin protein filaments involved in muscle contraction

Myosin - Thick protein filaments involved in muscle contraction