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16 Cards in this Set
- Front
- Back
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1
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Nerve impulse arrives at end of motor neuron
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2
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Release of Ach is triggered
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3
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Ach diffuses across synaptic cleft
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4
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Ach binds with receptor on motor end plate of muscle
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5
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Muscle Action potential is produce
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6
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Ach is broken down so an additional action potential is not produced
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7
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Action potential travels through T-tubules to S.R.
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8
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Channels in S.R. open up and release calcium
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9
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Calcium binds to troponin/tropomyosin complex
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10
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Troponin/tropomyosin complex changes shape and exposes myosin binding site on actin
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11
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Myosin heads split ATP to ADP
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12
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Energized myosin heads form crossbridges by binding to actin
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13
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Powerstroke thin filaments toward center of sarcomere
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14
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Crossbridge detaches from actin when another ATP is formed
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15
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Calcium pumps transfer Calcium back to S.R.
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16
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Troponin/tropomyosin complex binds onto myosin binding sites on actin
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