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Hello students, in this question we will be discussing about the skeletal muscle contraction steps.
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So, in the first part of the question, we go for skeletal steps of skeletal muscle contraction and we need to arrange the statements in correct order.
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So, the correct order is the acetylcholine is released into the neurotransmitter junction by the axon terminal, that is the first statement that acetylcholine is released into neuromuscular junction by axonal terminal.
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Second one is statement 4, where acetylcholine diffuses to neuromuscular junction and binds to receptor on sarcolemma.
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Next statement is sixth statement that is depolarization takes place resulting into production of action potential.
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Next is option 2 that is action potential causes sarcoplasmic reticulum to release calcium ion.
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The next one is option 5 that is the calcium ion concentration at myofilament increases and this myofilament slides past with another myofilament and leads to cell shortening.
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The next statement is option number 7 that is as calcium is reabsorbed in sarcoplasmic reticulum, its concentration in myofilaments decreases.
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Next is the third statement which is the muscle cell relaxes and lengthens.
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In the next part of the question, we need to answer the fill in the blanks...