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Is the following the correct order of steps leading to muscle contraction? (Yes or No) If you...

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Medical Sciences

Is the following the correct order of steps leading to musclecontraction? (Yes or No)

If you think the order is incorrect, then what would be thecorrect order?

a. secretion of acetylcholine by the motor neuron

b. attachment of acetylcholine to receptors on the motor endplate of the sarcolemma

c. opening of sodium channels in the sarcolemma

d. depolarization of the sarcolemma

e. action potential reaching the sarcoplasmic reticulum

f.   release of calcium ions by the sarcoplasmicreticulum

g. binding of calcium ions to troponin on the thin filament

h. binding of myosin to actin (formation of cross bridges)

i.   power stroke

Answer & Explanation Solved by verified expert
4.2 Ratings (552 Votes)
Answer Yes the steps mentioned above are in the correct order that leads to muscle contraction A somatic motor neuron innervates skeletal muscle fiber It releases a neurotransmitter called acetylcholine from    See Answer
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