8.4-8.7

8.4- 8.7

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A twitch has a brief delay between the time of stimulation and the beginning of contraction, this is the _______ period (may be less than 2 milliseconds).

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______ muscle:

Found only in the heart.

Composed of branching, striated cells interconnected in three-dimensional networks.

Each cell has many filaments of actin and myosin

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______ muscle:

Provide a variety of body movements.

Each muscles movement depends largely on the kind of joint it is associated with and the way the muscle attaches on either side of that joint.

Bones forming movable joints function as levers.

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______ muscle cells are elongated, with tapering ends.

Contain filaments of actin and myosin in myofibrils that extend the lengths of the cells.

Do not contain striations.