Sarcomere Anatomy Quiz
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Which myofilament is thick?
A. Myosin
B. Collagen
C. Elastin
D. Acetylcholine
What is the smallest unit of a muscle to contract?
A. Sarcomere
B. Myofibril
C. Muscle fiber
D. Myofilaments
Which part of the sarcomere is the line down the middle of the myosin?
A. Z line
B. I band
C. M line
Which part of a sarcomere contains BOTH actin and myosin myofilaments?
A. A band
B. I band
C. H zone
D. M line
How many types of myofilaments make up the sarcomere?
A. 1
B. 2
C. 4
D. 8
Which myofilament is thin?
A. Collagen
B. Elastin
C. Actin
D. Myosin
Which part of a sarcomere is the wall between two different sarcomeres?
A. M line
B. Z line
Which part of a sarcomere contains only thick filaments?
A. I band
B. A band
C. H zone
D. Z zone
Which part of a sarcomere contains only thin filaments?
A. I band
B. A band
C. H zone
D. M zone
Which part of the sarcomere is the dark band?
A. I band
B. H zone
C. Z line
D. A band
Which myofilament is attached to the z line?
A. Actin
B. Myosin
Which myofilament pulls the other one when a muscle contracts?
A. Actin pulls myosin
B. Myosin pulls actin
Which myofilament has hands to grab the other one?
A. Actin
B. Myosin
Which part of the sarcomere is the light band?
A. I band
B. H zone
C. Z line
D. M line