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Exam (elaborations)
Steps in Excitation-Contraction Coupling A+ Graded
Step 1 
Action potential spread along the sarcolemma to the T-tubules (transverse tubules) 
Step 2 
Calcium is released into the sarcoplasmic reticulum (S.R.) 
Step 3 
Calcium binds to actin and the blocking action of the tropomyosin is removed 
Step 4 
Myosin heads attach to begin contraction 
Step 5 
Calcium is removed and the binding sites on actin become blocked again by tropomyosin 
Step 6 
Muscle relaxes
Exam (elaborations)
Steps in Excitation-Contraction Coupling Questions and Answers(Actual exam questions/frequently tested questions and answers)100% Verified
PopularStep 1 
Action potential spread along the sarcolemma to the T-tubules (transverse tubules) Step 2 
Calcium is released into the sarcoplasmic reticulum (S.R.) 
Step 3 
Calcium binds to actin and the blocking action of the tropomyosin is removed
Exam (elaborations)
Steps in Excitation-Contraction Coupling All Correct Study Guide, Download to Score A questions with all the correct answers(Latest updated questions and answers)
Step 1 
Action potential spread along the sarcolemma to the T-tubules (transverse tubules) Step 2 
Calcium is released into the sarcoplasmic reticulum (S.R.) 
Step 3 
Calcium binds to actin and the blocking action of the tropomyosin is removed