Skeletal Muscle Flashcards by Aslin Choi

Q

connective tissue layers associated with skeletal muscle

A

epimysium, perimysium, endomysium

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Q

other connective tissue of skeletal muscle

A

fascia and aponeurosis (tendons)

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Q

the perimysium surrounds

A

fascicle

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Q

fascicle

A

bundle of skeletal muscle fibers (cells)

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Q

the endomysium surrounds

A

individual muscle fibers (cells)

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Q

muscle fiber is surrounded by

A

sarcolemma

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Q

muscle cell is filled with

A

sarcoplasm (fluid) and myofibrils

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Q

myofibrils made up of

A

sarcomeres

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Q

myofibrils surrounded by

A

sarcoplasmic reticulum and transverse tubules

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Q

cell characteristics

A

long cylindrical fibers with multiple nuclei

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Q

composed of

A

sarcomeres

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Q

SR?

A

abundant SR for Ca2+ storage

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Q

T tubules?

A

yes

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Q

gap junctions?

A

no gap junctions between cells

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Q

autorhythmicity?

A

no, voluntary nervous control instead

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Q

speed of contraction

A

fast

Q

regulated by

A

acetylcholine

Q

regeneration?

A

limited regeneration by satellite cells