steps of muscle contraction & relaxation summary
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| show | In step one of muscle contractions, nerve impulses cause the synaptic vesicle to release (ACH)
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| show | in the second step of muscle contraction, ACH diffuses through the synaptic cleft, this starts an impulse which spreads over the sacrolemma.
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| show | in the third step of muscle contraction, the impulse passes through the transverse tubule and to the sarcoplasmic reticulum which releases CA+ ions into the sarcoplasm.
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| what is the fourth step of Muscle contraction? | show 🗑
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| What is the fith step of muscle contraction? | show 🗑
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| show | in the sixth step of muscle contractions, the Z lines move towards each other, the sacromere shortens, the H zone disappears and muscle eventually contacts.
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| show | durring the seventh step of muscle contractions, ACH is inactivated by another chemical known as acetylcholine esterase. (ACHE). This terminates nerve impulse conduction at the neuromuscular joint. From this point muscle relaxes, process repeats.
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Created by:
malcolmloman