Muscular physiology

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  • Created by: ez
  • Created on: 04-11-13 22:21

1. What is the function of calmodulin?

  • To prevent Ca2+ from diffusing out of the sarcoplasmic reticulum
  • To bind to Ca2+ ions in smooth muscle, activating cross-bridge formation
  • To bind to Ca2+ ions in smooth muscle, activating Myosin Kinase
  • To bind to Ca2+ ions in cardiac muscle
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2. Which Troponin binds to the tropomyosin?

  • Troponin C
  • Troponin T
  • Troponin I

3. What is the I-band?

  • Area of thin actin filaments
  • Area of thick myosin filaments
  • Area of thick myosin filaments and thin actin filaments

4. What membrane surrounds each individual muscle fibre?

  • Endomysium
  • Sarcolemma
  • Perimysium
  • Epimysium

5. Which muscle cells are multinucleate?

  • Striated muscle only
  • Striated, cardiac and smooth muscle
  • Cardiac muscle only
  • Striated and cardiac muscle
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