Blood pressure in the mammalian aorta is maximum during:

1. systole of the left atrium
2. diastole of the right ventricle
3. systole of the left ventricle
4. diastole of the right atrium

Subtopic:  Human Heart: Cardiac Cycle |
 73%
From NCERT
NEET - 2015
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Which one of the following is correct?
1. Serum = Blood + Fibrinogen
2. Lymph = Plasma + RBC + WBC
3. Blood = Plasma + RBC + WBC + Platelets
4. Plasma = Blood – Lymphocytes

Subtopic:  Blood: General Description & RBC: Part 1 | Blood: General Description & RBC |
 75%
From NCERT
NEET - 2015
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The diagram given here is the standard ECG of a normal person, The P - wave represents the:

170951
1. Initiation of the ventricular contraction
2. Beginning of the systole
3. End of systole
4. Contraction of both the atria
Subtopic:  ECG & Coronary Artery Disease |
 76%
From NCERT
AIPMT - 2013
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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 no antigens in the plasma
4. both A and B antigens in the plasma but no antibodies

Subtopic:  Blood: Blood Group (A,B,O) |
 77%
From NCERT
AIPMT - 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 increased
4. Heart rate decreases but cardiac output increases

Subtopic:  Regulation of Cardiac Activity |
 78%
From NCERT
AIPMT - 2014
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Figure shows a schematic plan of blood circulation in humans with labels A to D. Identify the label and give its function/s. 

1. B-Pulmonary artery- takes blood from heart to lungs, PO2 = 90mm Hg
2. C-Vena Cava- takes blood from body parts to right auricle, PCO2 = 45mm Hg
3. D-Dorsal aorta- takes blood from heart to body parts, PO2 = 95mm Hg
4. A- Pulmonary vein - takes impure blood from body parts, PO2 = 60mm Hg

Subtopic:  Human Heart: Double Circulation |
 75%
From NCERT
AIPMT - 2013
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A certain road accident patient with an unknown blood group needs an immediate blood transfusion. His one doctor friend at once offers his blood. What was the blood group of the donor?

1. Blood group B

2. Blood group AB

3. Blood group O

4. Blood group A

Subtopic:  Blood: Blood Group (A,B,O) |
 94%
From NCERT
AIPMT - 2012
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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%
From NCERT
AIPMT - 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 the brain and kidney
4. 130/90 mmHg is considered high and requires treatment

Subtopic:  Atherosclerosis, Hypertension & Ventricular Fibrillation |
 73%
From NCERT
AIPMT - 2011
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A person with an unknown blood group under the ABO system, has suffered significant blood loss in an accident and needs an immediate blood transfusion. His friend who has a valid certificate of his blood type, offers blood donation without delay. What would have been the type of blood group of the donor friend?

1.  Type AB

2.  Type O

3.  Type A

4.  Type B

Subtopic:  Blood: Blood Group (A,B,O) |
 97%
From NCERT
AIPMT - 2011
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