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connective tissue surrounding a fasicle


Connective tissue ensheathing the entire muscle


contractile unit of muscle


a muscle cell


thin connective tissue investing each muscle cells


plasma membrane of the muscle cell


a long, filamentous organelle found within muscle cells that has a banded appearance


actin- or myosin-containing structure


cordlike extension of connective tissue beyond the muscle, serving to attach it to the bone


a discrete bundle of muscle cells


a continuous contraction that shows no evidence of relaxation

Isotonic Contraction

a contraction in which the muscle shortens and work is done

Many Moter Units

stimulated at a rapid rate to accomplish a strong contraction

Few Moter Units

stimulated at a rapid rate when a weak but smooth muscle contraction is desired


when a muscle is being stimulated but is not able to respond due to "oxygen debt"

Isometric contraction

a contraction in which the muscle does not shorten but tension in the muscle keeps increasing

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