a fibrous protein that forms (together with actin) the contractile filaments of muscle cells and is also involved in motion in other types of cells
a threadlike filament of actin or myosin that is a component of a myofibril
what is not reabsorbed into the axe terminal once a muscle has been stimulated
Inability of the muscle to respond to motor nerve stimulus is a result of a curare, a toxin, that blocks the
What is not necessary for muscle contraction that is generated by the sarcoplasm
the center of each sarcomere is the
What attaches to actin and forms cross bridges
The fine connective tissue sheath surrounding a muscle fiber
Down
Network of tubes that store and release calcium ions
thick filaments at the center of the sarcomere make up the dark band that is also known as the…
NOT a function of the muscular system
The cytoplasm of striated muscle cells
what binds to receptors and stimulates an action potential within muscle fiber
a globular protein complex involved in muscle contraction. It occurs with tropomyosin in the thin filaments of muscle tissue
a thin sheath of fibrous tissue enclosing a muscle or other organ
When I Bands get smaller, what occurs?
What is shifted, exposing the active sites within the fiber
a fibrous protein that forms (together with actin) the contractile filaments of muscle cells and is also involved in motion in other types of cells
a sheath of fibrous elastic tissue surrounding a muscle
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