RE-NEET 2024 Zoology Mechanism of Muscle Contraction Multiple Correct Question
Select the correct statements regarding mechanism of muscle contraction.
A. It is initiated by a signal sent by CNS via sensory neuron.
B. Neurotransmitter generates action potential in the sarcolemma.
C. Increased Ca²⁺ level leads to the binding of calcium with troponin on action filaments.
D. Masking of active site for actin is activated.
E. Utilising the energy from ATP hydrolysis to form cross bridge.
B, C and E only
C, D and E only
A and D only
B, D and E only
Correct Answer
Detailed Explanation
The correct statements are B, C, and E. Neurotransmitter action potential generation, calcium binding to troponin, and ATP hydrolysis for cross-bridge formation are key steps in muscle contraction.
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