Skeletal Muscle Parts

Fascicle

A discrete bundle of muscle cells

Myofibril

A long, filamentous organelle found within muscle cells that has a banded appearance

Fiber

A muscle cell

Myofilament

Actin or myosin containing structure

Perimysium

Connective tissue surrounding a fascicle

Sarcomere

Contractile unit of the muscle

Tendon

Cordlike extension of connective tissue beyond the muscle, serving to attach it to the bone

Epimysium

Just deep to the deep fascia

Sarcolemma

Plasma membrane of the muscle cell

Endomysium

Thin, connective tissue investing each muscle cell