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Questions and Answers
What is the major constituent of thin filaments in muscle cells?
What is the major constituent of thin filaments in muscle cells?
- Troponin
- Actin (correct)
- Myosin
- Tropomyosin
What type of muscle contraction does not necessarily involve muscle shortening?
What type of muscle contraction does not necessarily involve muscle shortening?
- Isotonic contraction
- Eccentric contraction
- Concentric contraction
- Isometric contraction (correct)
What is required for skeletal muscle contractions to be neurogenic?
What is required for skeletal muscle contractions to be neurogenic?
- Synaptic input from motor neurons (correct)
- Synaptic input from sensory neurons
- Hormonal activation
- Direct stimulation from the brain
Which protein is dominantly present in thick filaments of muscle cells?
Which protein is dominantly present in thick filaments of muscle cells?
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What type of muscle contraction can be described depending on the frequency of action potentials?
What type of muscle contraction can be described depending on the frequency of action potentials?
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