Muscles Flashcards by D G | Brainscape

Q

What is a sarcomere?

A

Makes up myofibril; has actin, myosin, titan

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Q

What is a myofibril?

A

Functional unit of muscle contraction

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Q

What is the M-line?

A

Middle of sarcomere

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Q

What is the Z-band?

A

Bisects I-band
Anchors thin
Sarcomere is one Z-band to next

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Q

What is the A-band?

A

Thick
Doesn’t move

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Q

What is the H-zone?

A

Thick
Shortens

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Q

What is the I-band?

A

Short
Thin

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Q

What is thin filament that shortens?

A

I-band

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Q

What is thick filament that does not move?

A

A-band

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Q

What bisects the I-band?

A

Z-line

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Q

What is the middle of the sarcomere?

A

M-line

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Q

What is thick filament that shortens?

A

H-zone

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