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Which of the following statements is/are correct?
(i) During muscle contraction, isotropic band gets elongated.
(ii). Acetylcholine is released when the neural signal reaches the motor end plate.
(iii) Muscle contraction is initiated by the signal sent by CNS via a sensory neuron.
(iv) Repeated activation of muscle can lead to lactic acid accumulation.
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(i). Isotropic bands are skeletal muscle cells that form the light bands (I bands) that contribute to the striated pattern of the cells. During muscle contraction, isotropic band does not get elongated.
(iii). Muscle contraction is initiated by a signal sent by the central nervous system via a motor neuron.
(iii). Muscle contraction is initiated by a signal sent by the central nervous system via a motor neuron.
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| Question Text | Which of the following statements is/are correct? (i) During muscle contraction, isotropic band gets elongated. (ii). Acetylcholine is released when the neural signal reaches the motor end plate. (iii) Muscle contraction is initiated by the signal sent by CNS via a sensory neuron. (iv) Repeated activation of muscle can lead to lactic acid accumulation. |
| Topic | Locomotion and Movement |
| Subject | Biology |
| Class | Class 11 |
| Answer Type | Text solution:1 |
| Upvotes | 53 |
