Assertion (A): | Smooth muscles are voluntary muscles. |
Reason (R): | They are under conscious control and allow for purposeful movements |
1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
3. | (A) is True but (R) is False. |
4. | Both (A) and (R) are False. |
Assertion (A): | Skeletal muscles are striated and voluntary. |
Reason (R): | They are controlled by the autonomic nervous system. |
1. | Both (A) and (R) are True and (R) is the correct explanation of (A) |
2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
3. | (A) is True but (R) is False. |
4. | (A) is False but (R) is True. |
Assertion (A): | Myasthenia gravis is characterized by muscle fatigue and weakness. |
Reason (R): | It is caused by a hyper response of immune system to a viral infection |
1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
3. | (A) is True but (R) is False. |
4. | (A) is False but (R) is True. |
Column I | Column II | ||
A. | Cervical | P. | 5 |
B. | Thoracic | Q. | 7 |
C. | Lumbar | R. | 12 |
A | B | C | |
1. | P | Q | R |
2. | Q | P | R |
3. | Q | R | P |
4. | R | Q | P |
1. | Red muscle fibers are adapted for endurance and have a high myoglobin content, while white muscle fibers are designed for short bursts of activity and contain less myoglobin. |
2. | White muscle fibers are rich in myoglobin, whereas red muscle fibers are not. |
3. | Red muscle fibers are smaller in diameter than white muscle fibers. |
4. | White muscle fibers have more mitochondria than red muscle fibers. |
Assertion(A): | Red muscle fibres are adapted to sudden outburst of muscular activity. |
Reason(R): | Red muscle fibres are extremely rich in sarcoplasmic reticulum. |
1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
3. | (A) is True but (R) is False. |
4. | (A) is False and (R) is False. |
1. | Ethmoid | 2. | Zygomatic |
3. | Mandible | 4. | Maxilla |
1. | Temporal | 2. | Zygomatic |
3. | Parietal | 4. | Occipital |
I: | binding to active sites on actin myofilaments |
II: | binding to ADP |