The following sequence of events occurs at the neuromuscular junction. nerve impulse → release of V→ end plate potential → W produced in muscle fibre → X released from sarcoplasmic reticulum→ formation of Y → muscle contraction Which one of the following shows the correct sequence from V-Y?
Correct answer: A. Option A
- A. Option A
- B. Option B
- C. Option C
- D. Option D
- E. Option E
Explanation
nerve impulse → release of acetylcholine→ end plate potential → action potential produced in muscle fibre → calcium ions released from sarcoplasmic reticulum→ formation of actomyosin complex → muscle contraction
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About Coordination and Control
Coordination depends on receptors, neurons, synapses and nerve impulses, with reflex actions traced through the reflex arc and the roles of major brain regions. Chemical coordination covers endocrine glands and hormones, including how hormones regulate growth, metabolism, reproduction and internal balance, unlike rapid nervous control.
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