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Muscle Contraction 7 Steps
This deck covers the seven key steps involved in muscle contraction, from the initial action potential to the final muscle contraction.
Step 1
Action potential travels down motor neuron
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Key Terms
Term
Definition
Step 1
Action potential travels down motor neuron
Step 2
Acetylcholine (ACH) released into sarcolemma
Step 3
Action potential on sarcolemma
Step 4
Sodium ions (Na+) rush into muscle cell
Step 5
Calcium (Ca+) released from cisternae
Step 6
Myosin heads attach to actin
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| Term | Definition |
|---|---|
Step 1 | Action potential travels down motor neuron |
Step 2 | Acetylcholine (ACH) released into sarcolemma |
Step 3 | Action potential on sarcolemma |
Step 4 | Sodium ions (Na+) rush into muscle cell |
Step 5 | Calcium (Ca+) released from cisternae |
Step 6 | Myosin heads attach to actin |
Step 7 | Muscle contracts |