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Which of the following statements about ...

Which of the following statements about the mechanism of muscle contraction are correct ?
(i) Acetylcholine is released when the neural signal reaches the motor end plate.
(ii)Muscle contraction is initiated by a signal sent by CNS via sensory neuron.
(iii) During muscle contraction, isotropic band gets elongated
(iv) Repeated activation of the muscles can lead to lactic acid accumulation.

A

(i) and (iv)

B

(i) and (iii)

C

(ii) and (iii)

D

(i), (ii) and (iii)

Text Solution

Verified by Experts

The correct Answer is:
A
Muscle contraction is initiated by a signal sent by CNS via a motor neuron. During muscle contraction, isotropic band gets shortened.
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