| Statement I: | Each rib is a thin flat bone connected ventrally to the vertebral column and dorsally to the sternum. |
| Statement II: | Each rib has two articulation surfaces on its ventral end and is hence called bicephalic. |
| 1. | is a U-shaped bone in the neck |
| 2. | is a flat bone on the ventral midline of thorax |
| 3. | is a small bone commonly found embedded within a muscle or tendon |
| 4. | provides attachment to floating ribs |
| I: | cervical region with 7 vertebrae |
| II: | thoracic region with 12 vertebrae (12) |
| III: | lumbar region with 4 vertebrae |
| IV: | sacral (2-fused) and coccygeal (2-fused) regions |
| I: | the ‘I’ bands get reduced |
| II: | the ‘A’ bands retain the length |
| I: | It is a polymerised protein. |
| II: | The HMM component is the head and short arm. |
| III: | The globular head is an active ATPase enzyme and has binding sites for ATP and active sites for actin. |
| I: | Z line | an attachment point for actin molecules |
| II: | M line | an attachment point for myosin molecules |
| III: | A band | a band where only actin molecules are found |
| IV: | I band | a band where only myosin molecules are found |
| COLUMN I | COLUMN II | ||
| A | Skeletal | P | Unstriated and Involuntary |
| B | Smooth | Q | Striated and Voluntary |
| C | Cardiac | R | Striated and Involuntary |
| A | B | C | |
| 1. | P | Q | R |
| 2. | R | Q | P |
| 3. | Q | P | R |
| 4. | P | R | Q |
| I: | is a specialised tissue of endodermal origin. |
| II: | contributes about 20-30 per cent of the body weight of a human adult. |