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Questions and Answers
What is the basic structural unit of a myofibril?
What is the basic structural unit of a myofibril?
- Myosarcomere
- Myofibrilin
- Fibrillar unit
- Sarcomere (correct)
Which protein forms the thin filaments in a sarcomere?
Which protein forms the thin filaments in a sarcomere?
- Nebulin
- Titin
- Actin (correct)
- Myosin
What is the function of titin in a sarcomere?
What is the function of titin in a sarcomere?
- Regulates calcium ion concentration
- Anchors the myosin filament to the Z line
- Provides elasticity and stabilizes the myosin filament (correct)
- Forms the M line in the sarcomere
What is the basic structural unit of a muscle fiber?
What is the basic structural unit of a muscle fiber?
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Which protein makes up the thick filaments in a sarcomere?
Which protein makes up the thick filaments in a sarcomere?
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What is the functional unit of a skeletal muscle?
What is the functional unit of a skeletal muscle?
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