Q. No.Given diagram shows bone of the left human hind limb as seen from front. It has certain mistakes in labeling. Two of the wrongly labelled bones are
1.
tibia and tarsals
2.
femur and fibula
3.
fibula and phalanges
4.
tarsals and femur
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Consider the following statements:
I. A motor neuron along with the muscle fibres connected to it constitute a motorunit.
II. The neurotransmitter released at the neuro-muscular junction is Acetylcholine.
III. Myosin head has ATPase activity.
Which of the above statements are true?
1. I and II only 2. I and III only
3. II and III only 4. I, II, and III
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Consider the following statements:
| I: | Myaesthenia gravis is an autoimmune disorder affecting neuromuscular junction. |
| II: | Muscular dystrophy is a progressive degeneration of skeletal muscles mostly due to genetic disorder. |
| III: | Tetany is rapid spasms in muscle due to high Ca++ in body fluid. |
Which of the above statements are true?
1. I and II only
2. I and III only
3. II and III only
4. I, II, and III
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Consider the following statements:
I. Proximal radioulnar joint is a type of ellipsoidal joint.
II. The first carpo-metacarpal joint is a saddle joint.
III. Gleno-humeral joint is a ball and socket joint.
Which of the above statements are true?
1. I and II only 2. I and III only
3. II and III only 4. I, II, and III
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In the given diagram of the lower limb bones of a human, a sesamoid bone is depicted by the letter:
1. A
2. B
3. C
4. D
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The globular head of the myosin filament has active site/s for binding to:
I. ATP
II. Active site on actin filament
III. Calcium
| 1. | Only I | 2. | Only I and II |
| 3. | Only II and III | 4. | I, II and III |
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The phosphogen that helps the regeneration of ATP from ADP during muscle contraction in vertebrates is
| 1. | ADP | 2. | Inosital phosphate |
| 3. | Arginine phosphate | 4. | Creatine phosphate |
How many haem group/(s) are found in a single molecule of myoglobin?
1. One
2. Three
3. Four
4. Many
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R):
| Assertion (A): | Smooth muscle is fundamentally different from skeletal muscle and cardiac muscle. |
| Reason (R): | Smooth muscle is an involuntary non-striated muscle. |
In the light of the above statements choose the correct answer from the options given below:
| 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. |
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