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Q. No.

Under normal physiological conditions a higher cardiac output can be achieved by a higher:
1. extracellular K+ concentration
2. blood pressure in the systemic circulation
3. venous return
4. parasympathetic tone

Subtopic:  Human Heart: Cardiac Cycle |
Level 3: 35%-60%

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Vagotomy [cutting of vagus nerve] would lead to:

1. reduced heart rate
2. increased heart rate
3. reduced strength of contraction
4. increased secretion of acetylcholine
Subtopic:  Regulation of Cardiac Activity |
Level 3: 35%-60%

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Which statement concerning blood viscosity is correct?

1. The viscosity of blood is less than the viscosity of water.
2. Blood viscosity is due to the presence of the plasma proteins and erythrocytes.
3. The higher the blood viscosity the easier the heart has to work to move blood through the vessels.
4. Anemia increases blood viscosity.
Subtopic:  Blood: General Description & RBC |
 76%
Level 2: 60%+

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The cytoplasmic granules released by thrombocytes during platelet plug formation, which attract more platelets to the plug are:

1. prostacyclin and NO 2. erythropoietin and bilirubin
3. heparin and plasmin 4. ADP and thromboxanes
Subtopic:  Blood: Blood Clotting |
Level 3: 35%-60%

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A person comes to the ER with a need of blood transfusion. How would you determine his blood type?

1. By mixing his blood with the blood of another person of known blood type and if there is no reaction they are the same type.
2. By looking at red blood cells under a microscope to see what kind of antigens are on their membranes.
3. By checking to see which plasma antibodies a person has and he won't have antibodies against his own blood type.
4. By mixing the blood with different antibodies to see which ones cause the red blood cells to agglutinate.
Subtopic:  Blood: General Description & RBC |
Level 3: 35%-60%

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Given below are two statements: 

Assertion (A): The lack of mitochondria decreases the efficiency of oxygen transport by the red blood cells to the tissues.
Reason (R): Red blood cells are unable to make ATP of their own.
 
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.
Subtopic:  Blood: General Description & RBC |
 50%
Level 3: 35%-60%

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Assertion (A): No virus can evolve to target human red blood cells.
Reason (R): The human red blood cells are unable to carry out protein synthesis.
 
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:  Blood: General Description & RBC |
 54%
Level 3: 35%-60%

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Assertion: ABO blood group incompatibilities between the mother and child do not usually cause hemolytic disease of the newborn.
Reason:

Females do not make antibodies against A and B antigens.
 
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.
Subtopic:  Blood: Blood Group |
Level 3: 35%-60%

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Given below are two statements: 

Assertion (A): In patients of liver failure the risk of bleeding is increased.
Reason (R): Liver synthesizes most of the clotting factors and activates Vitamin K.
 
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:  Blood: Blood Clotting |
 79%
Level 2: 60%+

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Assertion (A): Prolonged aerobic exercise training may also increase stroke volume, which frequently results in a lower (resting) heart rate.
Reason (R): Reduced heart rate prolongs ventricular diastole (filling), increasing end-diastolic volume, and ultimately allowing more blood to be ejected.
 
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 |
 52%
Level 3: 35%-60%

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