Q. No.Identify the one that is not associated with others when a muscle is not contracting:
1. actin
2. myosin
3. troponin
4. tropomyosin
1. actin
2. myosin
3. troponin
4. tropomyosin
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Even when the blood supply is inadequate, the muscle is able to sustain contraction due to:
| 1. | the presence of hemoglobin | 2. | glycogen storage |
| 3. | myoglobin | 4. | citric acid cycle |
The minimum stimulus needed to cause a contraction is called the:
1. chronaxie
2. threshold
3. rheobase
4. reversal potential
A sustained muscle contraction evoked when the motor nerve that innervates a skeletal muscle emits action potentials at a very high rate is called as:
1. a sustained contraction
2. fatigue
3. tetanic contraction
4. treppe
The continuous and passive partial contraction of the muscles is called as:
1. tetany
2. tonus
3. sustained contraction
4. summation
Stimulation by a nerve impulse is always required for the contraction of:
1. multi-unit smooth muscle
2. skeletal muscle
3. visceral smooth muscle
4. cardiac muscle
A decrease in the mass of the muscle most commonly experienced when persons suffer temporary disabling circumstances is called as:
1. hypertrophy
2. atrophy
3. dystrophy
4. peristalsis
A neuromuscular disorder that causes weakness in the skeletal muscles is:
| 1. | poliomyelitis | 2. | myasthenia gravis |
| 3. | multiple sclerosis | 4. | muscular dystrophy |
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