Statements about the mechanism of muscle contraction: 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 a sensory neuron III. During muscle contraction, isotropic band gets elongated IV. Repeated activation of the muscles can lead to lactic acid accumulation

Question

Statements about the mechanism of muscle contraction: 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 a 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 alone are correct (B) I and III alone are correct (C) II and III alone are correct (D) I, II and III alone are correct

Tardigrade Admin · Accepted Answer

Muscle contraction is initiated by a signal sent by CNS via a motor neuron. During muscle contraction, isotropic band gets shorten.

$I$ and $I V$ alone are correct

$I$ and $III$ alone are correct

$II$ and $III$ alone are correct

$I, II$ and $III$ alone are correct

$I$ and $II$ alone arc correct

Muscle contraction is initiated by a signal sent by CNS via a motor neuron. During muscle contraction, isotropic band gets shorten.

I and IV alone are correct

I and III alone are correct

II and III alone are correct

I,II and III alone are correct

I and II alone arc correct

Muscle contraction is initiated by a signal sent by CNS via a motor neuron. During muscle contraction, isotropic band gets shorten.

$I$ and $I V$ alone are correct

$I$ and $III$ alone are correct

$II$ and $III$ alone are correct

$I, II$ and $III$ alone are correct

$I$ and $II$ alone arc correct