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Q. No.A neural signal reaching the neuro-muscular junction releases a neurotransmitter called:
1. Epinephrine
2. Substance P
3. Acetylcholine
4. Serotonin
1. Epinephrine
2. Substance P
3. Acetylcholine
4. Serotonin
Subtopic: Excitation Contraction Coupling I | Excitation Contraction Coupling II | Sliding Filament Theory |
95%
From NCERT
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Flagellar movement helps in all the following except:
| 1. | the swimming of spermatozoa in humans |
| 2. | maintenance of water current in the canal system of sponges |
| 3. | locomotion of Protozoans like Euglena |
| 4. | movement of plasmodia in slime moulds |
Subtopic: Introduction to Locomotion |
77%
From NCERT
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Consider the following two statements:
1. Both I and II are correct and II explains I
2. Both I and II are correct but II does not explain I
3. I is correct but II is incorrect
4. I is incorrect but II is correct
| I: | Repeated activation of muscles can lead to fatigue. |
| II: | Repeated activation of muscles can lead to accumulation of lactic acid. |
1. Both I and II are correct and II explains I
2. Both I and II are correct but II does not explain I
3. I is correct but II is incorrect
4. I is incorrect but II is correct
Subtopic: Excitation Contraction Coupling I |
87%
From NCERT
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Which of the following ports of the scapula forms a joint with the clavicle?
| 1. | acromion | 2. | glenoid cavity |
| 3. | spine | 4. | scapular notch |
Subtopic: Appendicular Skeleton | Appendicular Skeleton: Girdle |
70%
From NCERT
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The joint between adjacent vertebrae in the vertebral column is a:
1. Fibrous joint
2. Cartilaginous joint
3. Gliding synovial joint
4. Condyloid synovial joint
1. Fibrous joint
2. Cartilaginous joint
3. Gliding synovial joint
4. Condyloid synovial joint
Subtopic: Synovial Joint |
86%
From NCERT
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During shortening of the muscle, i.e., contraction:
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
| I: | the ‘I’ bands get reduced |
| II: | the ‘A’ bands retain the length |
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Skeletal Muscle: Sarcomere | Muscle Contraction: Other Considerations |
90%
From NCERT
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A motor neuron along with all the muscle fibers innervated by it constitute a:
| 1. | Fascicle | 2. | Motor end plate |
| 3. | Motor unit | 4. | Myoneural junction |
Subtopic: Skeletal Muscle: Basic Anatomy | Skeletal Muscle: Myofilaments |
69%
From NCERT
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Consider the given two statements:
| Statement I: | The total number of bones in each upper limb is less than the number of bones in each lower limb. |
| Statement II: | The number of carpals in each upper limb is lower than the number of tarsals in each lower limb. |
| 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: Appendicular Skeleton |
89%
From NCERT
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How many of the given statements regarding the parts labeled in the given figure are true?
1. 0
2. 1
3. 2
4. 3
| I: | 1 has condyles and articulates with first vertebra, 10 are floating ribs |
| II: | 2 articulates with acetabulum, 5 articulates with glenoid cavity |
| III: | 3 is radius, 4 is ulna, 7 is fibula, 8 is tibia |
| IV: | 9 shows thoracic vertebrae |
2. 1
3. 2
4. 3
Subtopic: Appendicular Skeleton | Axial Skeleton |
70%
From NCERT
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Consider the given two statements:
| Statement I: | Bone and cartilage are specialised connective tissues. |
| Statement II: | The cartilage has a very hard matrix due to calcium salts in it and the bone has slightly pliable matrix due to chondroitin salts. |
| 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: Connective Tissue |
85%
From NCERT
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