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Q. No.Calcium released into the sarcoplasm during muscle contraction:
1.
binds to the actin and myosin and makes them work together.
2.
breaks apart ATP to ADP and P.
3.
removes the tropomyosin block.
4.
causes the release of acetylcholine.
Subtopic: Sliding Filament Theory |
61%
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Consider the given two statements regarding the cycle of events taking place during skeletal muscle contraction:
1. Statement I is correct; Statement II is correct
2. Statement I is correct; Statement II is incorrect
3. Statement I is incorrect; Statement II is correct
4. Statement I is incorrect; Statement II is incorrect
| Statement I: | The myosin, hydrolysing ATP into ADP and Pi goes back to its relaxed state. |
| Statement II: | Cross bridge is broken when myosin releases ADP and Pi. |
1. Statement I is correct; Statement II is correct
2. Statement I is correct; Statement II is incorrect
3. Statement I is incorrect; Statement II is correct
4. Statement I is incorrect; Statement II is incorrect
Subtopic: Sliding Filament Theory | Energy for Muscle Contraction |
From NCERT
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Consider the two statements:
1. Statement I is correct; Statement II is correct
2. Statement I is correct; Statement II is incorrect
3. Statement I is incorrect; Statement II is correct
4. Statement I is incorrect; Statement II is incorrect
| Statement I: | First seven pairs of the ribs are called true ribs and are attached to the thoracic vertebrae and ventrally connected to the sternum with the help of elastic cartilage. |
| Statement II: | The 8th, 9th and 10th pairs are false ribs and join the seventh rib with the help of elastic cartilage. |
1. Statement I is correct; Statement II is correct
2. Statement I is correct; Statement II is incorrect
3. Statement I is incorrect; Statement II is correct
4. Statement I is incorrect; Statement II is incorrect
Subtopic: Sternum & Ribs |
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How many of the given pairs are correctly matched:
1. 2
2. 3
3. 4
4. 5
| I: | Ball and socket joint | Between humerus and pectoral girdle |
| II: | Hinge joint | Knee joint |
| III: | Pivot joint | Between atlas and occipital bone |
| IV: | Gliding joint | Between the carpals |
| V: | Saddle joint | Between carpal and metacarpal of thumb |
1. 2
2. 3
3. 4
4. 5
Subtopic: Synovial Joint |
57%
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Consider the given two statements:
1. Statement I is correct; Statement II is correct
2. Statement I is correct; Statement II is incorrect
3. Statement I is incorrect; Statement II is correct
4. Statement I is incorrect; Statement II is incorrect
| Statement I: | A single filament of tropomyosin runs close to the ‘F’ actins throughout its length. |
| Statement II: | In the resting state, a subunit of troponin masks the active binding sites for myosin on the actin filaments. |
2. Statement I is correct; Statement II is incorrect
3. Statement I is incorrect; Statement II is correct
4. Statement I is incorrect; Statement II is incorrect
Subtopic: Skeletal Muscle: Myofilaments |
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Given below are two statements:
| Assertion (A): | Electrical excitability is a property of nervous tissue but not of muscular tissue. |
| Reason (R): | The ability to respond to internal and external stimuli is lacking in muscular tissue. |
| 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. | Both (A) and (R) are False. |
Subtopic: Muscle |
51%
From NCERT
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Consider the given two statements:
1. Statement I is correct; Statement II is correct
2. Statement I is correct; Statement II is incorrect
3. Statement I is incorrect; Statement II is correct
4. Statement I is incorrect; Statement II is incorrect
| Statement I: | Each ‘G’ [globular] actin is a polymer of monomeric ‘F’ actins. |
| Statement II: | The globular head is an active ATPase enzyme and has binding sites for ATP and active sites for actin. |
1. Statement I is correct; Statement II is correct
2. Statement I is correct; Statement II is incorrect
3. Statement I is incorrect; Statement II is correct
4. Statement I is incorrect; Statement II is incorrect
Subtopic: Skeletal Muscle: Myofilaments |
56%
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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: Sliding Filament Theory | Muscle Contraction: Other Considerations |
56%
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Which of the following statements are correct regarding skeletal muscle?
Choose the most appropriate answer from the options given below:
| A: | Muscle bundles are held together by collagenous connective tissue layer called fascicle. |
| B: | Sarcoplasmic reticulum of muscle fibre is a store house of calcium ions. |
| C: | Striated appearance of skeletal muscle fibre is due to distribution pattern of actin and myosin proteins. |
| D: | M line is considered as functional unit of contraction called sarcomere. |
| 1. | C and D only | 2. | A, B and C only |
| 3. | B and C only | 4. | A, C and D only |
Subtopic: Skeletal Muscle: Basic Anatomy | Skeletal Muscle: Myofilaments | Skeletal Muscle: Sarcomere |
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NEET - 2023
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NEET 2026 - Target Batch - Vital
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NEET 2026 - Target Batch - Vital
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: Muscle Contraction: Other Considerations |
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