- 1(current)
Q. No.| Assertion(A): | Red muscle fibres are adapted to sudden outburst of muscular activity. |
| Reason(R): | Red muscle fibres are extremely rich in sarcoplasmic reticulum. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | (A) is False and (R) is False. |
Subtopic: Â Muscle Contraction: Other Considerations |
From NCERT
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A motor neuron along with the muscle fibers connected to it constitute:
1. a neuromuscular junction
2. a motor unit
3. a syncytium
4. a fascicle
1. a neuromuscular junction
2. a motor unit
3. a syncytium
4. a fascicle
Subtopic: Â Muscle Contraction: Other Considerations |
 60%
From NCERT
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Hints
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A motor unit is composed of:
| 1. | a motor neuron and all of the skeletal muscle fibers innervated by the neuron's axon terminals. |
| 2. | all motor neurons and all of the skeletal muscle fibers innervated by them in a muscle. |
| 3. | a motor neuron and one skeletal muscle fiber innervated by the neuron. |
| 4. | a motor neuron and a sensory neuron. |
Subtopic: Â Sliding Filament Theory |Â Muscle Contraction: Other Considerations |
 56%
From NCERT
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Hints
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A motor neuron along with the muscle fibres connected to it constitutes a:
| 1. | Neuro-muscular junction |
| 2. | Motor end plate |
| 3. | Sarcomere |
| 4. | Motor unit |
Subtopic: Â Muscle Contraction: Other Considerations |
 56%
From NCERT
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Q. No.
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