Skeletal Muscle Structure Part A

Fascicle

a small bundle of muscle fibers

Sarcolemma

cell membrane of a muscle fiber

Sarcoplasmic reticulum

cellular organelle in muscle fiber corresponding to the endoplasmic reticulum

Tendon

cordlike part that attaches a muscle to a bone

Sarcoplasm

cytoplasm of a muscle fiber

Myosin

protein found within thick myofibril

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 tubule

membranous channel extending inward from muscle fiber membrane

Fascia

network of connective tissue that extends throughout the muscular system

Sarcomere

unit of alternating light and dark striations between z lines