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Human Bioscience > Muscles > Flashcards

Muscles Flashcards

1
Q

Sarcolemma

A

Plasma membrane of muscle fibre

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2
Q

Myocyte

A

Muscle cell

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3
Q

Sarcomere

A

Contracting unit of the myofibril

Found within the myofibril

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4
Q

Myofibril

A

Muscle fibres

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5
Q

Actin

A

Thin filament

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6
Q

Myosin

A

Thick filament

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7
Q

Which of the two myofilaments contain titin, troponin and tropomyosin

A

Actin

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8
Q

What does Acetylecholine release in the myofibril?

A

Ca++

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9
Q

Where does Na+ depolarise the voltage-gated channels to allow the release of Ca2+ in the muscle ?

A

T-tubules

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10
Q

What reaction ‘cocks’ the head of myosin, this readying it for contraction?

A

ATP hydrolysis

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Human Bioscience (7 decks)

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