Q. No.The head of the humerus forms a ball and socket joint with a scapular:
1. acromion process. 2. glenoid cavity. 3. coracoid process. 4. acetabulum.
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The clavicle articulates with:
1. first rib and thoracic vertebra
2. humerus and sternum
3. cervical rib and sternum
4. scapula and sternum
There are 8 and 7 bones respectively in:
1. tarsal [ankle] and carpal [wrist]
2. carpal[wrist] and tarsal[ankle]
3. neurocranium and facial skeleton
4. facial skeleton and neurocranium
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Identify the correct characteristic of a skeletal muscle:
1. spindle-shaped cells
2. involuntary control
3. true syncytium
4. non striated
Arrange the given structures in relation to a skeletal muscle in descending order of their size:
a. whole muscle
b. muscle fiber (cell)
c. myofilament
d. myofibril
e. muscle fasciculus
| 1. a, b, e, c, d | 2. a, b, e, d, c |
| 3. a, e, b, c, d | 4. a, e, b, d, c |
The correct statement regarding myofibril would be:
1. It is the name for a muscle cell.
2. It contains sarcoplasmic reticulum.
3. It is made up of many sarcomeres.
4. It is a bundle of muscle cells.
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Myosin myofilaments are
1. made up of thick and thin myofilaments.
2. found only in the H zone.
3. not seen in the H zone.
4. attached to filaments that form the M line.
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Identify the correct statement:
1. Tropomyosin is found in two forms – monomeric G and polymeric F.
2. The head of the myosin molecule binds to an active site on G actin.
3. ATPase is present in troponin A.
4. Actin molecules do not move during muscle contraction.
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The extensions of the cell membrane that penetrate into the centre of skeletal and cardiac muscle cells are called as:
| 1. | transverse tubule system | 2. | sarcoplasmic reticulum |
| 3. | myofibrils | 4. | terminal cisternae |
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