Zoology-Muscle Contraction
NEET Zoology Muscle Contraction MCQ Question
Type: MCQ-diagram based-Medium-Class 11
A diagram depicts the neuromuscular junction where a neural signal leads to muscle contraction. Which of the following accurately describes the immediate effect of the neurotransmitter release at this junction?
A
Release of calcium ions into the sarcoplasm.
B
Binding of myosin heads to actin filaments.
C
Hydrolysis of ATP by the myosin head.
D
Relaxation of the muscle fibre.
Correct Answer
Option A
Detailed Explanation
Upon the release of the neurotransmitter Acetyl choline at the neuromuscular junction, it generates an action potential in the sarcolemma, leading to the release of calcium ions into the sarcoplasm.
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