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Unformatted text preview: respond. 7. The force of the muscle contraction does increase because many motor neurons are responding to the increased stimulus voltage. This allows more muscle cells to contract. 8. The role of tropomyosin in muscle contraction is that it fits into grooves of actin filament. This enables the myosin site to be exposed. 9. Calcium is required for muscle contraction because it needs to be pumped into the cell, so that it can bind to troponin. This causes a change in troponin which changes into tropomyosin. Then actin and myosin interact with each other and the sarcomere contracts. 10. ATP is required for muscle contraction because it is our energy source. ATP is released so that actin and myosin can link up. This allows the filaments to slide over one another causing a contraction....
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This note was uploaded on 04/30/2008 for the course BIO 244 taught by Professor Van sciver during the Fall '06 term at Rhode Island.
- Fall '06
- Van Sciver