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Q. No.The part of the sarcomere that is composed of only myosin myofilaments is:
1.
A band
2.
I band
3.
M line
4.
H zone
Subtopic: Skeletal Muscle: Sarcomere |
60%
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A neuromuscular disorder that causes weakness in the skeletal muscles is:
| 1. | poliomyelitis | 2. | myasthenia gravis |
| 3. | multiple sclerosis | 4. | muscular dystrophy |
Subtopic: Disorders of Muscular and Skeletal System |
67%
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What happens during the contraction of a skeletal muscle fiber?
| 1. | The myosin filaments stay the same size but the actin filaments shorten |
| 2. | The sarcomeres shorten |
| 3. | The actin filaments stay the same size but the myosin filaments shorten |
| 4. | Both actin and myosin filaments shorten |
Subtopic: Excitation Contraction Coupling I |
67%
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Subtopic: Axial Skeleton |
96%
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Cross bridge formation during muscle contraction involves:
| 1. | troponin and actin | 2. | tropomyosin and myosin |
| 3. | myosin and troponin | 4. | myosin and actin |
Subtopic: Sliding Filament Theory |
71%
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Classification of joints is done on the basis of:
| I: | the connective tissue that binds the bones together |
| II: | the degree of motion at each joint |
| III: | the number of bones that articulate with each other |
| IV: | the embryonic tissue that formed the joint |
| 1. | I, II and III | 2. | II and III |
| 3. | I, II, III and IV | 4. | I and II |
Subtopic: Fibrous & Catilaginous Joints |
52%
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The fibrous joint between skull bones is called as:
| 1. | gomphoses | 2. | syndesmoses |
| 3. | symphysis | 4. | sutures |
Subtopic: Fibrous & Catilaginous Joints |
86%
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The first carpometacarpal joint at the base of the thumb is a:
| 1. | ellipsoidal joint | 2. | pivot joint |
| 3. | saddle joint | 4. | gliding joint |
Subtopic: Synovial Joint |
81%
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Pain and inflammation that occur when too much uric acid crystallizes and deposits in the joints are known as:
| 1. | gout | 2. | osteoarthritis |
| 3. | osteoporosis | 4. | rheumatoid arthritis |
Subtopic: Disorders of Muscular and Skeletal System |
89%
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Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R):
| Assertion (A): | Shortening of myofilaments leads to the shortening of the muscle. |
| Reason (R): | Only the actin myofilaments shorten while the length of the myosin myofilaments remains the same during the muscle shortening. |
In the light of the above statements choose the correct answer from the options given below:
| 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: Excitation Contraction Coupling I |
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