
| 1. | (a) Skeletal - Triceps (b) Smooth - Stomach (c) Cardiac - Heart |
2. | (a) Skeletal - Biceps (b) Involuntary - Intestine (c) Smooth - Heart |
| 3. | (a) Involuntary - Nose tip (b) Skeletal - Bone (c) Cardiac - Heart |
4. | (a) Smooth - Toes (b) Skeletal - Legs (c) Cardiac - Heart |
| A: | Muscle bundles are held together by collagenous connective tissue layer called fascicle. |
| B: | Sarcoplasmic reticulum of muscle fibre is a store house of calcium ions. |
| C: | Striated appearance of skeletal muscle fibre is due to distribution pattern of actin and myosin proteins. |
| D: | M line is considered as functional unit of contraction called sarcomere. |
| 1. | C and D only | 2. | A, B and C only |
| 3. | B and C only | 4. | A, C and D only |
The type of muscles present in our:
| 1. | upper arms are smooth muscle fibres fusiform in shape |
| 2. | heart is involuntary and unstriated smooth muscles |
| 3. | intestine are striated and involuntary |
| 4. | thighs are striated and voluntary |