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The muscular system requires an amazing amount of coordination from the nervous system. This week you will learn about the process of muscle excitation which results in contraction and eventually relaxation. Using what you have learned and your research please answer the below questions.
1) Briefly describe the physiological process of "contracting" a muscle, starting with the release of acetylcholine in the neuromuscular junction.
2) What are actin & myosin? (p. 153)
3) Why is calcium important?
