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Correctly order the steps of excitation contraction coupling for a muscle fiber. 1. 2. 3. 4. 5. 6.

Correctly order the steps of excitation contraction coupling for a muscle fiber. 1. 2. 3. 4. 5. 6.

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
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Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Correctly order the steps of excitation contraction coupling for a muscle fiber. 1. 2. 3. 4. 5. 6. Release of acetylcholine into synaptic cleft binding receptors on the sarcolemma (motor end plate) 1. 2. 3. 4. 5. 6. Free calcium binds to troponin resulting in a shift in tropomyosin, exposing actin-myosin binding sites 1. 2. 6. Sodium channels open allowing sodium ions to enter the cell, depolorizing the sarcolemma and T-tubules. 1. 2. 3. 4. 5. 6. A nerve signal arrives at the synaptic knob 1. 2. 3. 4. 5. 6. Cross-bridge cycling occurs resulting in shortening of the sarcomere. 1. 2. 3. 4. 5. 6. Depolarizations of T-tubules stimulate the release of calcium from the sarcoplasmic reticulum 5. 4. 3.
Transcribed Image Text:Correctly order the steps of excitation contraction coupling for a muscle fiber. 1. 2. 3. 4. 5. 6. Release of acetylcholine into synaptic cleft binding receptors on the sarcolemma (motor end plate) 1. 2. 3. 4. 5. 6. Free calcium binds to troponin resulting in a shift in tropomyosin, exposing actin-myosin binding sites 1. 2. 6. Sodium channels open allowing sodium ions to enter the cell, depolorizing the sarcolemma and T-tubules. 1. 2. 3. 4. 5. 6. A nerve signal arrives at the synaptic knob 1. 2. 3. 4. 5. 6. Cross-bridge cycling occurs resulting in shortening of the sarcomere. 1. 2. 3. 4. 5. 6. Depolarizations of T-tubules stimulate the release of calcium from the sarcoplasmic reticulum 5. 4. 3.
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