Q. No.Select the correct statement regarding the specific disorder of muscular or skeletal system.
1.
Muscular dystrophy - age-related shortening of muscles
2.
Osteoporosis- decrease in bone mass and higher chances of fractures with advancing age
3.
Myasthenia gravis- an autoimmune disorder which inhibits the sliding of myosin filaments
4.
Gout- inflammation of joints due to extra deposition of calcium
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Which one of the following is the correct description of a certain part of a normal human skeleton?
1. First vertebra is axis which articulates with the occipital condyles
2. The 9th and 10th pairs of ribs are called the floating ribs
3. Glenoid cavity is a depression with which the thigh bone articulates
4. Parietal bone and the temporal bone of the skull are joined by a fibrous joint
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It is much easier for a small animal to run uphill than for a large animal, because
1. It is easier to carry a small body weight
2. Smaller animals have a higher metabolic rate
3. Small animals have a lower O2 requirement
4. The efficiency of muscles in large animals is less than in the small animals
The membranous connective tissue closest to the individual muscle fiber in a skeletal muscle is called as:
| 1. | aponeurosis | 2. | epimysium |
| 3. | perimysium | 4. | endomysium |
Identify the protein that is not associated with others when the skeletal muscle is relaxed:
| 1. | Actin | 2. | Myosin |
| 3. | Tropomyosin | 4. | Troponin |
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Accumulation of uric acid in joints will lead to:
| 1. | Rheumatoid arthritis | 2. | Osteoarthritis |
| 3. | Osteomalacia | 4. | Gouty arthritis |
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Abnormal curvature of the vertebral column where the alignment shows a lateral deviation is called as:
| 1. | kyphosis | 2. | lordosis |
| 3. | scoliosis | 4. | ankylosis |
An example of a fibrous joint ‘gomphosis’ in the human body is:
| 1. | humerus-ulna | 2. | femur-innominate |
| 3. | tooth-alveolus | 4. | mandible-temporal |
Tetany is caused by:
1. low levels of Ca++ in body fluids
2. high levels of Ca++ in body fluids
3. low levels of K+ in body fluids
4. high levels of K+ in body fluids
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Skeletal muscles appear striated due to presence of two characteristic proteins in alternating dark and light bands. Which of the following is a correct match of the protein with its light refractive property and colour?
| Protein | Colour | Property | |
| 1. | Myosin | Light | Anisotropic |
| 2. | Actin | Dark | Anisotropic |
| 3. | Myosin | Dark | Isotropic |
| 4. | Actin | Light | Isotropic |
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