Q. No.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 |
Which one of the following statement is incorrect?
| 1. | Heart muscles are striated and involuntary |
| 2. | The muscles of hands and legs are striated and voluntary |
| 3. | The muscles located in the inner walls of alimentary canal are striated and involuntary |
| 4. | Muscles located in the reproductive tracts are unstriated and involuntary |
Macrophages and leucocytes exhibit
1. ciliary movement
2. flagellar movement
3. amoeboid movement
4. gliding movement
Name of muscle/location
| 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 |
Which of the following is not a function of the skeletal system?
1. Production of erythrocytes
2. Storage of minerals
3. Production of body heat
4. Locomotion
| 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. |
Choose the most appropriate answer from the options given below:
| 1. | C and D only | 2. | A, B and C only |
| 3. | B and C only | 4. | A, C and D only |
Which one of the following pairs of chemical substances, is correctly categorised?
| 1. | Pepsin and prolactin - Two digestive enzymes secreted in the stomach |
| 2. | Troponin and myosin - Complex proteins in striated muscles |
| 3. | Secretin and rhodopsin - Polypeptide hormones |
| 4. | Calcitonin and thymosin - Thyroid hormones |
What is a sarcomere:
1. Part between two H-line
2. Part between two A-line
3. Part between two I-band
4. Part between two Z-line
Match the following columns.
|
Column I |
Column II |
|
A. Fast muscle fibres B. Slow muscle fibres C. Actin filament D. Sarcomere |
1. Myoglobin 2. Lactic acid 3. Contractile unit 4. I-band |
Codes
A B C D
1. 1 2 4 3
2. 2 1 3 4
3. 2 1 4 3
4. 3 2 4 1
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