Assertion: Coronary arteries are especially vulnerable to obstruction by atherosclerotic plaques or thrombus.
Reason: Coronary arteries supply oxygenated blood to the muscles of the heart itself.

1. Both assertion and reason are true and the reason is the correct explanation of the assertion.
2. Both assertion and reason are true but the reason is not the correct explanation of the assertion.
3. Assertion is true but reason is false.
4. Both assertion and reason are false.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false

Subtopic:  Atherosclerosis, Hypertension & Ventricular Fibrillation |
 61%

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Assertion: Hypertension is a risk factor for coronary artery disease and stroke.
Reason: Hypertension damages arterial endothelium promoting plaque formation.

1. Both assertion and reason are true and the reason is the correct explanation of the assertion.
2. Both assertion and reason are true but the reason is not the correct explanation of the assertion.
3. Assertion is true but reason is false.
4. Both assertion and reason are false

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
Subtopic:  Atherosclerosis, Hypertension & Ventricular Fibrillation |
 63%

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Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R): 

Assertion (A): The left ventricle pumps the blood with greater force than the right ventricle.
Reason (R): The left ventricle pumps more blood than the right ventricle during each contraction.


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.
Subtopic:  Human Heart: Cardiac Cycle |
 54%

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The second largest constituent of plasma is:
1. Water
2. Proteins
3. Glucose
4. Hormones

Subtopic:  Blood: General Description & RBC |
 87%
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A person with which of the following blood groups can receive blood from a donor of only his/her own blood group?

1. O 2. A
3. B 4. AB
Subtopic:  Blood: Blood Group (A,B,O) |
 82%
From NCERT

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Certain factors that can initiate coagulation of blood can be released by:

I: Platelets in the blood
II: Tissues at the site of injury
III: Liver
 
1. I and II only 2. I and III only
3. II and III only 4. I, II and III
Subtopic:  Blood: Blood Clotting |
 64%
From NCERT

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Interstitial fluid resembles plasma in the same distribution of:
1. Formed elements
2. Proteins
3. Minerals
4. Enzymes

Subtopic:  Blood: General Description & RBC |
From NCERT

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All terrestrial vertebrates possess:
1. A muscle or elastic membrane to increase thoracic volume
2. A renal portal system
3. A skin that does allow diffusion of gases
4. At least a three chambered heart

Subtopic:  Human Heart: Double Circulation |
 61%
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What separates the right and the left atria in the human heart?

1.A thin muscular wall2.A thick muscular wall
3.A thin fibrous membrane4.A thick fibrous membrane

Subtopic:  Human Heart: Gross Anatomy |
 61%
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A tricuspid valve will prevent flow of blood from:
1. Right atrium to right ventricle
2. Right ventricle to right atrium
3. Left atrium to left ventricle
4. Left ventricle to left atrium

Subtopic:  Human Heart: Cardiac Cycle |
 59%
From NCERT

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