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Q. No.Subtopic: Energy for Muscle Contraction |
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Skeletal muscles are:
| 1. | Striated, Multinucleate and Voluntary |
| 2. | Non-Striated, Multinucleate and Voluntary |
| 3. | Striated, Multinucleate and Involuntary |
| 4. | Non-Striated, Uni-nucleate and Voluntary |
Subtopic: Skeletal Muscle: Basic Anatomy |
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With respect to the red muscle fibers [Type I], the white muscle fibers [Type II] are richer in:
| 1. | Blood capillaries | 2. | Myoglobin |
| 3. | Sarcoplasmic reticulum | 4. | Mitochondria |
Subtopic: Muscle Contraction: Other Considerations |
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The smallest, functional unit of contraction is the:
| 1. | muscle fiber | 2. | sarcomere |
| 3. | myofilament | 4. | myofibril |
Subtopic: Skeletal Muscle: Basic Anatomy |
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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 |
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As the distance from Z line to Z line decreases, which bands shorten in a sarcomere?
| 1. | the I band and H band | 2. | the I band and A band |
| 3. | the A band and H band | 4. | all bands shorten |
Subtopic: Sliding Filament Theory |
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All the following regarding red muscle fibers are true except:
| 1. | They are adapted for slow and sustained activity |
| 2. | They have a high content of myoglobin |
| 3. | They are rich in mitochondria |
| 4. | They depend on anaerobic process for energy |
Subtopic: Muscle Contraction: Other Considerations |
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The central part of the thick filaments not overlapped by the thin filaments is called as:
| 1. | A band | 2. | I band |
| 3. | H zone | 4. | Sarcomere |
Subtopic: Skeletal Muscle: Sarcomere |
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During relaxation of a skeletal muscle:
| 1. | Calcium ions that are bound to troponin C now bind to troponin A |
| 2. | Cross bridge formation between myosin head and actin takes place |
| 3. | The A band of the sarcomere lengthens |
| 4. | Calcium ions are pumped back to the sarcoplasmic cisternae |
Subtopic: Sliding Filament Theory | Energy for Muscle Contraction |
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What type of muscles do you expect to find in the inner walls of hollow visceral organs?
| 1. | Involuntary, nonstriated | 2. | Voluntary, nonstriated |
| 3. | Involuntary, striated | 4. | Voluntary, striated |
Subtopic: Skeletal Muscle: Basic Anatomy |
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