| 1. | when myofilaments slide past each other actin elements shorten while myosin filaments do not shorten |
| 2. | actin myosin filaments shorten and slide pass each other |
| 3. | actin and myosin filaments do not shorten, but rather slide pass each other |
| 4. | when myofilament slide pass each other myosin filament shorten while actin filaments do not shorten |
| Column I | Column II | |
| 1. | Cartilaginous | Skull bones joint |
| 2. | Hinge joint | Between vertebrae |
| 3. | Fibrous joint | Between phalanges |
| 4. | Gliding joint | Between zygapo-physes of the successive vertebrae |
| Statement I: | Locomotory structures need not to be different from those affecting other types of movements. |
| Statement II: | All movements are locomotions, but not all locomotions are movements. |
| I: | Amoeboid |
| II: | Ciliary |
| III: | muscular |
| I: | is a specialised tissue of endodermal origin. |
| II: | contributes about 20-30 per cent of the body weight of a human adult. |
| 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 |
| 1. | A skeletal muscle cell is called as a muscle fibre. |
| 2. | A skeletal muscle fibre is a syncytium. |
| 3. | Sarcolemma, the plasma membrane of skeletal muscle cell, encloses the sarcoplasm. |
| 4. | Sarcoplasmic reticulum of the muscle fibres is a rough endoplasmic reticulum and is involved in excessive protein synthesis. |