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Figure 2.38
NASM 4th Edition: Chapter 2- Figure 2.38 Excitation-Contraction Coupling
Question | Answer |
---|---|
ACH released to binding receptors, | Steps in the initiation of a contraction: Step 1 |
Action reaches T tubule | Steps in the initiation of a contraction: Step 2 |
sacroplasmic reticulum releases CA2t | Steps in the initiation of a contraction: Step 3 |
active site exposure cross-bridge binding (actin and myosin overlap), | Steps in the initiation of a contraction: Step 4 |
z lines get shorter, contraction begins | Steps in the initiation of a contraction: Step 5 |
ACH removed by ACHE, | Steps that end the contraction: Step 1 |
sarcoplasmic reticulum recaptures CA2t, | Steps that end the contraction: Step 2 |
active site covered, so there is no cross bridge interaction between actin and myosin, | Steps that end the contraction: Step 3 |
contraction ends, | Steps that end the contraction: Step 4 |
relaxation occurs passive return to resting length | Steps that end the contraction: Step 5 |