Question

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.
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.

Answer 1

Answer:

i) true

ii) false

iii)false

iv) true ..

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Answer 2

Answer:

1.True.

2.Muscle contraction is initiated by the signals sent by CNS via motor nerve.

3.False it gets reduced.

4.True