| 1. | Muscular dystrophy | An auto immune disorder causing progressive degeneration of skeletal muscle |
| 2. | Arthritis | Inflamed joints |
| 3. | Tetany | high Ca2+ level causing rapid spasms. |
| 4. | Myasthenia gravis | Genetic disorder resulting in weakening and paralysis of skeletal muscle |
Which of the following is correct statement ?
| 1. | Actin and regulatory proteins are located in thin filament. |
| 2. | Z-lines anchor myosin (thick) filament to the ends of the sarcomere. |
| 3. | Sarcoplasmic reticulum stores acetylcholine. |
| 4. | Myosin cross bridges contain calcium binding sites. |
| 1. | Patella | Cup shaped bone | Cover the knee ventrally |
| 2. | Scapula | Large triangular flat bone | situated in the dorsal part of the thorax between the 2nd and the 5th ribs |
| 3. | Vertebrochondral ribs | 8th, 8th, 10th pairs of ribs | Join the 7th rib with the help of hyaline cartilage |
| 4. | Coxal bone | It is one pair formed by the fusion of ilium ischium and pubis | It contains a cavity called acetabulam to which the thigh bone form ball and socket joint. |
| List I | List II |
| A. Skull | I. 30 |
| B. Vertebral column | II. 24 |
| C. Ribs | III. 22 |
| D. Forelimbs | IV. 26 |
| List I | List II |
| A. Clavicle | I. Pelvic girdle |
| B. Femur | II. Knee cap |
| C. Ischium | III. Thigh bone |
| D. Patella | IV. Pectoral girdle |
| 1. | Actin and myosin filaments slide over each other to increase the length of the sarcomere. |
| 2. | Length of A–band does not change. |
| 3. | I–band increases in length |
| 4. | The actin filaments slide away from A–band resulting in shortening of sarcomere |
| 1. | Inflammation of joints due to accumulation of uric acid crystals |
| 2. | Weakening of bones due to decreased bone mass |
| 3. | Inflammation of joints due to cartilage degeneration |
| 4. | Weakening of bones due to low calcium level |
| A | B | C | D | |
| 1. | I band | A band | H zone | M line |
| 2. | I band | H zone | M line | Z line |
| 3. | A band | I band | Z line | M line |
| 4. | H zone | I band | M line | Z line |