- 1(current)
Q. No.Choose the correct statements regarding muscle contraction
Choose the correct answer from the options given below:
| A. | A motor neuron carries a signal sent by the Central Nervous System (CNS) to the sarcolemma of the muscle fibre. |
| B. | The neural signal generates an action potential which causes the release of \(Ca^{++}\) into sarcoplasm. |
| C. | Increase in \(Ca^{++}\) inactivates the actin for breaking cross bridges. |
| D. | Actin binds to the myosin head to form a cross bridge. |
| E. | Shortening of sarcomere takes place by pulling actin filaments towards the centre of 'A' band. |
| 1. | A, B, D and E only | 2. | C and D only |
| 3. | C and E only | 4. | A and B only |
Subtopic: Â Mechanism of muscle contraction |
 77%
Level 2: 60%+
NEET - 2026
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Hints
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Muscle contraction is initiated by a signal sent by the central nervous system by the release of _______.
1. cyclic adenine monophosphate
2. acetyl choline
3. acetyl coenzyme A
4. cyclic guanine monophosphate
1. cyclic adenine monophosphate
2. acetyl choline
3. acetyl coenzyme A
4. cyclic guanine monophosphate
Subtopic: Â Mechanism of muscle contraction |
 71%
Level 2: 60%+
NEET - 2026
Please attempt this question first.
Hints
Please attempt this question first.
- 1(current)
Q. No.
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