Quick Quiz: Skeletal Muscle Cell Biology




Fill-in Answer Correct False Correct Answer
1. Name the two proteins that interact to generate force.
2. Which part of the myosin molecule forms the cross-bridge?
3. Rigor mortis occurs due to a lack of __________.
4. Does ATP hydrolysis occur before or after myosin binds to actin?
5. Name the regulatory protein in skeletal muscle that binds calcium ions.
6. Name the regulatory protein that blocks myosin binding sites on the actin filament.
7. What is the source of the Ca++ that regulates skeletal muscle cross-bridge cycling?
8. The membrane of the T-tubules is continuous with the _______.
9. What interacts with the "foot" to open the sarcoplasmic reticulum Ca++ channel?
10. The activity of which protein leads to skeletal muscle relaxation?
11. The safety factor is a function of the amplitude of the __________.
12. What autoimmune disorder decreases the safety factor?
13. In the above disorder, the patient makes antibodies against which protein?


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