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Sarcomere Anatomy Quiz

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Which part of a sarcomere is the wall between two different sarcomeres?

A. M line

B. Z line

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Which part of the sarcomere is the light band?

A. I band

B. H zone

C. Z line

D. M line

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What is the smallest unit of a muscle to contract?

A. Sarcomere

B. Myofibril

C. Muscle fiber

D. Myofilaments

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Which myofilament has hands to grab the other one?

A. Actin

B. Myosin

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How many types of myofilaments make up the sarcomere?

A. 1

B. 2

C. 4

D. 8

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Which part of a sarcomere contains BOTH actin and myosin myofilaments?

A. A band

B. I band

C. H zone

D. M line

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Which myofilament is thick?

A. Myosin

B. Collagen

C. Elastin

D. Acetylcholine

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Which part of a sarcomere contains only thin filaments?

A. I band

B. A band

C. H zone

D. M zone

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Which myofilament pulls the other one when a muscle contracts?

A. Actin pulls myosin

B. Myosin pulls actin

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Which part of the sarcomere is the dark band?

A. I band

B. H zone

C. Z line

D. A band

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Which part of a sarcomere contains only thick filaments?

A. I band

B. A band

C. H zone

D. Z zone

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Which myofilament is thin?

A. Collagen

B. Elastin

C. Actin

D. Myosin

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Which part of the sarcomere is the line down the middle of the myosin?

A. Z line

B. I band

C. M line

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Which myofilament is attached to the z line?

A. Actin

B. Myosin

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