pre-week 5

Multi-nucleate

Containing many nuclei

Sarcomere

Contractile unit of a muscle cell that make a myofibril

Sarcoplasmic Reticulum

Modified endoplasmic reticulum that regulates calcium in the cell

Myoglobin

Oxygen-binding protein in a muscle cell

Myofilament

The major component of a muscle cell (takes up the most intracellular volume)

T-tubules

Tubes continuous with the sarcolemma to increase surface area

Fascicle

a group of muscle cells within the belly of a muscle

Muscle Fiber

an individual muscle cell

Sarcolemma

plasma membrane of skeletal muscle cells

sarcoplasm

the cytoplasm of a skeletal muscle cell