A&P Skeletal Muscle Structure and Function

Fascicle

a small bundle of muscle fibers within a muscle

Sarcoplasmic reticulum

cellular organelle in muscle fiber corresponding to the endoplasmic reticulum

Fascia

connective tissue located between adjacent muscles

Tendon

cordlike part that attaches a muscle to a bone

Sarcoplasm

cytoplasm of a muscle fiber

Perimysium

layer of connective tissue that separates a muscle into small bundles called fascicles

Epimysium

layer of connective tissue that surrounds a skeletal muscle

Endomysium

layer of connective tissue that surrounds an individual muscle fiber

Transverse (T) tubule

membranous channel extending inward from muscle fiber membrane

Sarcolemma

plasma membrane of a muscle fiber

Myosin

protein found within thick filament

Sarcomere

unit of alternating light and dark striations between Z discs (lines)