Q. No.
A dense outer layer of vascular connective tissue enveloping the bones except at the surfaces of the joints is the:
1. epiphysis
2. diaphysis
3. articular cartilage
4. periosteum
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When a bone bends and cracks, instead of breaking completely into separate pieces, the fracture is called as:
1. greenstick
2. incomplete
3. compound
4. simple
The critical event for the contraction of striated muscles would be that calcium ions:
| 1. | are released from troponin C |
| 2. | bind to tropomyosin |
| 3. | bind to troponin |
| 4. | are taken up by the sarcoplasmic reticulum |
All the following shorten during muscle contraction except:
1. sarcomere
2. A bands
3. I bands
4. H bands
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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 |
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For the muscular movements to be coordinated, it is important that:
1. the muscle twitches must be of increasing strength.
2. muscle is divided into motor units
3. type I fibers must be more than type II fibers in a muscle
4. the muscle twitches undergo tetanization.
Calcium, vital for muscle contraction, is stored in:
1. transverse tubules
2. myosin head
3. myofibrils
4. sarcoplasmic reticulum
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