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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: Mechanism of muscle contraction |
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Which of the following statements are correct with reference to human endoskeleton?
Choose the correct answer from the options given below :
| A. | Human skull is monocondylic. |
| B. | The joint between any two adjoining vertebrae is a cartilaginous joint. |
| C. | In human beings, the number of cervical vertebrae is seven. |
| D. | All ribs except the last 2 pairs are bicephalic. |
| E. | The occipital bone of skull is articulated with atlas vertebra. |
| 1. | A, B and D only | 2. | B and E only |
| 3. | B, C and E only | 4. | C, D and E only |
Subtopic: Axial Skeleton |
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Match List-I with List-II related to muscular/skeletal system:
Choose the correct answer from the options given below :
1. A-III, B-I, C-II, D-IV
2. A-IV, B-III, C-II, D-I
3. A-I, B-II, C-III, D-IV
4. A-III, B-II, C-I, D-IV
| List-I | List-II | ||
| A. | Tetany | I. | Inflammation of joints |
| B. | Arthritis | II. | Autoimmune disorder affecting neuromuscular junction |
| C. | Mysathenia gravis | III. | Wild contraction in muscle due to low \(Ca^{++} \) in body fluid |
| D. | Muscular dystrophy | IV. | Progressive degeneration of skeletal muscle |
1. A-III, B-I, C-II, D-IV
2. A-IV, B-III, C-II, D-I
3. A-I, B-II, C-III, D-IV
4. A-III, B-II, C-I, D-IV
Subtopic: Disorders of Muscular and Skeletal System |
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Which of the following is the correct order of arrangement of vertebrate column from the head to toe ?
| 1. | Cervical vertebra, thoracic vertebra, lumbar vertebra, sacrum |
| 2. | Cervical vertebra, thoracic vertebra, sacrum |
| 3. | Sacrum, lumbar vertebra, thoracic vertebra |
| 4. | Cervical vertebra, cervical vertebra, thoracic vertebra, lumbar vertebra, sacrum |
Subtopic: Vertebral column |
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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: Mechanism of muscle contraction |
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Sperm motility is due to___________.
1. muscular movement
2. flagellar movement
3. ciliary movement
4. amoeboid movement
1. muscular movement
2. flagellar movement
3. ciliary movement
4. amoeboid movement
Subtopic: Introduction to Locomotion |
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Subtopic: Axial Skeleton |
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Which of the following represents the correct sequence of arrangement of bones in the lower limb of humans?
1. Femur-tarsal-patella-tibia
2. Femur-tibia-patella-tarsal
3. Patella-femur-tibia-tarsal
4. Femur-patella-tibia-tarsal
1. Femur-tarsal-patella-tibia
2. Femur-tibia-patella-tarsal
3. Patella-femur-tibia-tarsal
4. Femur-patella-tibia-tarsal
Subtopic: Appendicular Skeleton |
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Match List I with List II:
Choose the correct answer from the options given below:
1. A-I, B-III, C-II, D-IV
2. A-II, B-III, C-I, D-IV
3. A-III, B-I, C-IV, D-II
4. A-IV, B-II, C-III, D-I
| List I | List II | ||
| A. | Fibrous joints | I. | Adjacent vertebrae, limited movement |
| B. | Cartilaginous joints | II. | Humerus and Pectoral girdle, rotational movement |
| C. | Hinge joints | III. | Skull, don't allow any movement |
| D. | Ball and socket joints | IV. | Knee, help in locomotion |
Choose the correct answer from the options given below:
1. A-I, B-III, C-II, D-IV
2. A-II, B-III, C-I, D-IV
3. A-III, B-I, C-IV, D-II
4. A-IV, B-II, C-III, D-I
Subtopic: Fibrous & Catilaginous Joints | Synovial Joint |
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Match List-I with List-II:
Choose the correct answer from the options given below:
| List-I Location of Joint | List-II Type of Joint | ||
| A. | Joint between humerus and pectoral girdle | I. | Gliding joint |
| B. | Knee joint | II. | Ball and socket joint |
| C. | Joint between atlas and axis | III. | Hinge Joint |
| D. | Joint between carpals | IV. | Pivot joint |
| 1. | A-II,B-III,C-IV,D-I | 2. | A-III,B-II,C-I,D-IV |
| 3. | A-I,B-IV,C-III,D-II | 4. | A-II,B-I,C-III,D-IV |
Subtopic: Fibrous & Catilaginous Joints |
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