Q. No.Elbow joint is an example of:
1. Pivot joint
2. Hinge joint
3. Glinding joint
4. ball and socket joint
Which one of the following is the correct matching of three items and their grouping category?
| Items | Group | |
| 1. | Malleus, incus cochlea | Ear ossicles |
| 2. | Ilium, ischium, pubis | Coxal bones of pelvic girdle |
| 3. | Actin, myosin rhodopsin | Muscle proteins |
| 4. | Cytosine, uracil thiamine | pyrimidines |
In human body, which one of the following is anatomically correct?
| 1. | Floating ribs-2 pairs | 2. | Collar bones-3 pairs |
| 3. | Salivary glands-1 pair | 4. | Cranial nerves-10 pairs |
Which one of the following items gives its correct total number?
1. Floating ribs in humans - 4
2. Amino acids found in proteins - 16
3. Types of diabetes - 3
4. Cervical vertebrae in humans - 8
The contractile protein of skeletal muscle involving ATPase activity is:
1. tropomyosin
2. myosin
3. α-actinin
4. troponin
Which of the following muscular disorders is inherited?
1. Botulism
2. Tetany
3. Muscular dystrophy
4. Myasthenia gravis
Select the correct option.
| 1. | There are seven pairs of vertebrosternal, three pairs of vertebrochondral and two pairs of vertebral ribs. |
| 2. | 8th, 9th and 10th pairs of ribs articulate directly with the sternum. |
| 3. | 11th and 12th pairs of ribs are connected to the sternum with the help of hyaline cartilage. |
| 4. | Each rib is a flat thin bone and all the ribs are connected dorsally to the thoracic vertebrae and ventrally to the sternum. |
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 |
The H-zone in the skeletal muscle fibre is due to:
| 1. | The central gap between myosin filaments in the A-band. |
| 2. | The central gap between actin filaments extends through myosin filaments in the A-band. |
| 3. | Extension of myosin filaments in the central portion of the A-band |
| 4. | The absence of myofibrils in the central portion of the A-band. |
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