Chapter Ten Vocab Flashcards
Epimysium
Surrounded entire muscle
Perimysium
Surrounds fascicles
Fascicle
Group of muscle cells
Endomysium
Separates individual cells
Electrically isolates cells
Tendon
All three layers as they merge to attach to bone
Muscle
Group of fascicles
Muscle fascicle
Group of muscle fibers (cell)
Muscle fiber
Group of myofibrils
Sarcolemma
Muscle cell membrane
Sarcoplasma
Muscle cell cytoplasm
Sarcoplasmic reticulum
Smooth endoplasmic reticulum
Stores calcium
Cisternae
Areas of the ER dedicated to CA++ storage
Actin
Major protein of thin filament
Has a binding site fore myosin allowing cross bridge with myosin to form
Tropomyosin
Long, fibrous molecule, extending over actin, and preventing interaction between actin and myosin
Troponin
Binds reversibly to calcium and able to move tropomyosin away from the actin active site