ATPase activity is found in:

1. Myosin head 2. Myosin tail
3. G-Actin 4. Troponin
Subtopic:  Energy for Muscle Contraction |
 95%
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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 |
 93%
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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 |
 83%
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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 |
 88%
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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 |
 68%
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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 |
 89%
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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 |
 85%
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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 |
 88%
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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 |
 86%
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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 |
 90%
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