Which one of the following animals has two separate circulatory pathways?

1. Frog

2. Lizard

3. Whale

4. Shark

Subtopic:  Blood: General Description & RBC: Part 1 | Blood: General Description & RBC |
 63%
From NCERT
NEET - 2015
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Doctors use a stethoscope to hear the sounds produced during each cardiac cycle. The

second sound is heard when

1. AV valves open up

2. Ventricular walls vibrate due to gushing in of blood from atria

3. Semilunar valves close down after the blood flows into vessels from ventricles

4. AV node receives the signal from SA node

Subtopic:  Human Heart: Cardiac Cycle |
 92%
From NCERT
NEET - 2015
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Erythropoiesis starts in:-

1. kidney

2. liver

3. spleen

4. red bone marrow

Subtopic:  Blood: General Description & RBC: Part 2 | Blood: General Description & RBC |
NEET - 2015
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Blood pressure in the mammalian aorta is maximum during

1. systole of the left atrium

2. diastole of the right ventricle

3. systole ot the left ventricle

4. diastole of the right atrium

Subtopic:  Human Heart: Cardiac Cycle |
 70%
NEET - 2015
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Which one of the following is correct?

1. Plasma = Blood - Lymphocytes

2. Serum = Blood + Fibrinogen

3. Lymph = Plasma + RBC + WBC

4. Blood = Plasma + RBC + WBC + Platelets

Subtopic:  Blood: General Description & RBC: Part 1 | Blood: General Description & RBC |
 90%
NEET - 2015
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Person with blood group AB is considered as universal recipient because he has

1. Both A and B antigens on RBC but no antibodies in the plasma

2. Both A and B antibodies in the plasma

3. No antigen on RBC and antibody in the plasma

4. Both A and B antigens in the plasma but no antibodies.

Subtopic:  Blood: Blood Group (A,B,O) |
 79%
From NCERT
NEET - 2014
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How do parasympathetic neural signals affect the working of the heart?

1. Reduce both heart rate and cardiac output

2. heart rate is increased without affecting the cardiac output

3. Both heart rate and cardiac output increase

4. Heart rate decreases but cardiac output increases

Subtopic:  Regulation of Cardiac Activity |
 79%
From NCERT
NEET - 2014
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The diagram given here is the standard ECG of a normal person. the P-wave represents

the

 

1. contraction of both the atria

2. initiation of the ventricular contraction

3. beginning of the systole

4. end of systole

Subtopic:  ECG & Coronary Artery Disease |
 81%
From NCERT
NEET - 2013
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Arteries are best defined as the vessels which 

1. carry blood away from the heart to different organs

2. break up into capillaries which reunite to form a vein

3. carry blood from one visceral organ to another visceral organ

4. supply oxygenated blood to the different organs

Subtopic:  Human Heart: Double Circulation |
 71%
NEET - 2011
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Which one of the following statements is correct regarding blood pressure?

1. 100/55 mmHg is considered an ideal blood pressure

2. 105/50 mmHg makes one very active

3. 190/110 mmHg may harm vital organs like brain and kidney

4. 130/90 mmHg is considered high and requires treatment

Subtopic:  Atherosclerosis, Hypertension & Ventricular Fibrillation |
 72%
From NCERT
NEET - 2011
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