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Question

1 AaBbCcDc AaBbcD AaBbC AaBbCcl 1 Normal !,-. | Paragraph 2. What is the contractile unit called? . | | 1 No Spac Heading 1 Heading 2 I. What is a muscle cell called Style 3. What is the cytoplasm of a muscle cell called? 4. What is the plasma membrane of a muscle cell called? 5. What is the endoplasmic reticulum of a muscle cell called? 6. What is stored in a muscle cell's "endoplasmic reticulum?" 7. What are 2 accessory proteins of actin? 8. What does calcium bind to during a muscle contraction? 9. What binds to actin during a muscle contraction? 10. What is the space between a motor neuron and a muscle cell called? 11. What is released between this space to stimulate a muscle to contract? 12. What does the substance that is released in this space bind to? 13. What is the end of the motor neuron called? 14. What activates the thick filaments to slide against the thin filaments in a muscle contraction? 15. What activates the muscle cell's "endoplasmic reticulum?" 16. What substance stores oxygen in the muscle fiber? 17. How is glucose stored in the muscle fiber? 18. What mechanism starts the actual muscle contraction? 19. What is the function of troponin? 20. What is the function of tropomyosin?

Explanation / Answer

Answers:-

1.muscle fibre or myofibre.

2.sarcomere.

3.sarcoplasm.

4.sarcolemma.

5.sarcoplasmic reticulum.

6.calcium.

7.troponin and tropomyosin .

8.troponin.

9.myosin.

10.neuromuscular junction .

11.acetyl choline .

12.acetyl choline receptors.

13.motor end plate synapses.

14.ATP.

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