I: | is derived from embryonic endoderm |
II: | constitutes about 40-50 percent of human body |
Skeletal muscles are:
1. | Striated, Multinucleate and Voluntary |
2. | Non-Striated, Multinucleate and Voluntary |
3. | Striated, Multinucleate and Involuntary |
4. | Non-Striated, Uni-nucleate and Voluntary |
I: | Skeletal muscles are striated and voluntary |
II: | Smooth muscles are striated and involuntary |
III: | Cardiac muscles are striated and involuntary |
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. |
What type of muscles do you expect to find in the inner walls of hollow visceral organs?
1. | Involuntary, nonstriated | 2. | Voluntary, nonstriated |
3. | Involuntary, striated | 4. | Voluntary, striated |
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. |
1. | Fascia | 2. | Perimysium |
3. | Endomysium | 4. | Epimysium |
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. |
Regarding a skeletal muscle fibre:
I: | It is a syncytium. |
II: | It has sarcoplasmic reticulum [a type of smooth ER] that stores calcium. |
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect