Question 1: Palette 1/76

NEET 2026 MCQ

The WBC count of a person's blood sample is $8000 / \mathrm{cu} \mathrm{mm}$. How many eosinophils and lymphocytes would be in the same blood sample approximately?

A

$300-500 / \mathrm{cu} \mathrm{mm}$ and $1200-1500 / \mathrm{cu} \mathrm{mm}$ respectively

B

$160-240 / \mathrm{cu} \mathrm{mm}$ and $1600-2000 / \mathrm{cu} \mathrm{mm}$ respectively

C

$300-500 / \mathrm{cu} \mathrm{mm}$ and $500-700 / \mathrm{cu} \mathrm{mm}$ respectively

D

$100-120 / \mathrm{cu} \mathrm{mm}$ and $160-200 / \mathrm{cu} \mathrm{mm}$ respectively

Question 2: Palette 2/76

NEET 2026 MCQ

Select the incorrect statement with reference to Rh grouping.

A. Erythroblastosis foetalis is a condition observed having foetus with $\mathrm{Rh}^{-\mathrm{ve}}$ blood and mother with $\mathrm{Rh}^{+\mathrm{ve}}$ blood.

B. Rh antigen is observed on RBCs in the majority of human beings.

C. Before blood transfusion, Rh group should also be matched.

D. Rh incompatibility is observed when a pregnant mother is $\mathrm{Rh}^{-\mathrm{ve}}$ and the foetus is $\mathrm{Rh}^{+\mathrm{ve}}$.

E. Erythroblastosis foetalis can be avoided by administering anti-Rh antibodies to the mother immediately after the delivery of the second child.

Choose the answer from the options given below :

A

C and D only

B

A and B only

C

A and E only

D

B and C only

Question 3: Palette 3/76

NEET 2026 MCQ

Which of the following statements is incorrect?

A

Fibrinogen is produced from fibrin

B

Blood coagulates in response to an injury

C

Blood clot consists of fibrins

D

Fibrin is produced from fibrinogen

Question 4: Palette 4/76

NEET 2026 MCQ

The number of action potentials generated by sino-atrial node (SAN) in a healthy human is $\_\_\_\_$ per minute.

A

$120-140$

B

$28-30$

C

$70-75$

D

$100-110$

Question 5: Palette 5/76

NEET 2026 MCQ

The opening between the right atrium and the right ventricle is guarded by $\_\_\_\_$ .

A

sino-atrial node

B

bicuspid valve

C

tricuspid valve

D

semilunar valve

Question 6: Palette 6/76

NEET 2025 MCQ

What is the name of the blood vessel that carries deoxygenated blood from the body to the heart in a frog?

A

Pulmonary vein

B

Vena cava

C

Aorta

D

Pulmonary artery

Question 7: Palette 7/76

NEET 2024 MCQ

A person with blood group ARh– can receive the blood transfusion from which of the following types?

A. BRh$^–$

B. ABRh$^–$

C. ORh$^–$

D. ARh$^–$

E. ARh$^+$

Choose the correct answer from the options given below :

A

D and E only

B

D only

C

A and B only

D

C and D only

Question 8: Palette 8/76

NEET 2024 MCQ

Diuresis is prevented by:

A

Renin from JG cell via switching off the osmoreceptors

B

ANF from atria of the heart

C

Aldosterone from adrenal medulla

D

Vasopressin from Neurohypophysis

Question 9: Palette 9/76

NEET 2024 MCQ

'Lub' sound of Heart is caused by the _________.

A

closure of the semilunar valves

B

opening of tricuspid and bicuspid valves

C

opening of the semilunar valves

D

closure of the tricuspid and bicuspid valves

Question 10: Palette 10/76

NEET 2024 MCQ

Following are the stages of pathway for conduction of an action potential through the heart

A. AV bundle

B. Purkinje fibres

C. AV node

D. Bundle branches

E. SA node

Choose the correct sequence of pathway from the options given below

A

E-C-A-D-B

B

A-E-C-B-D

C

B-D-E-C-A

D

E-A-D-B-C

Question 11: Palette 11/76

NEET 2024 MCQ

Match List I with List II :

	List - I		List - II
A.	P wave	(i)	Heart muscles are electrically silent.
B.	QRS complex	(ii)	Depolarisation of ventricles.
C.	T wave	(iii)	Depolarisation of atria.
D.	T-P gap	(iv)	Repolarisation of ventricles.

Choose the correct answer from the options given below :

A

A-I, B-III, C-IV, D-II

B

A-III, B-II, C-IV, D-I

C

A-II, B-III, C-I, D-IV

D

A-IV, B-II, C-I, D-III

Question 12: Palette 12/76

NEET 2023 MCQ

Match List-I with List-II.

	List - I (ECG)		List - II (Electrical activity of heart)
(A)	P-wave	(I)	Depolarisation of ventricles
(B)	QRS complex	(II)	End of systole
(C)	T wave	(III)	Depolarisation of atria
(D)	End of T wave	(IV)	Repolarisation of ventricles

Choose the correct answer from the options given below :

A

A-(IV), B-(I), C-(III), D-(II)

B

A-(I), B-(IV), C-(III), D-(II)

C

A-(IV), B-(III), C-(I), D-(II)

D

A-(III), B-(I), C-(IV), D-(II)

Question 13: Palette 13/76

NEET 2023 MCQ

Match List-I with List-II.

	List - I		List - II
(A)	Eosinophils	(I)	6 - 8%
(B)	Lymphocytes	(II)	2 - 3%
(C)	Neutrophils	(III)	20 - 25%
(D)	Monocytes	(IV)	60 - 65%

Choose the correct answer from the options given below :

A

A-(IV), B-(I), C-(II), D-(III)

B

A-(IV), B-(I), C-(III), D-(II)

C

A-(II), B-(III), C-(IV), D-(I)

D

A-(II), B-(III), C-(I), D-(IV)

Question 14: Palette 14/76

NEET 2023 MCQ

Match List I with List II.

	List I		List II
(A)	P-wave	(I)	Beginning of systole
(B)	Q-wave	(II)	Repolarisation of ventricles
(C)	QRS complex	(III)	Depolarisation of atria
(D)	T-wave	(IV)	Depolarisation of ventricles

Choose the correct answer from the options given below :

A

A-IV, B-III, C-II, D-I

B

A-II, B-IV, C-I, D-III

C

A-I, B-II, C-III, D-IV

D

A-III, B-I, C-IV, D-II

Question 15: Palette 15/76

NEET 2023 MCQ

Which of the following statements are correct?

A. Basophils are most abundant cells of the total WBCs

B. Basophils secrete histamine, serotonin and heparin

C. Basophils are involved in inflammatory response

D. Basophils have kidney shaped nucleus

E. Basophils are agranulocytes

Choose the correct answer from the options given below:

A

C and E only

B

B and C only

C

A and B only

D

D and E only

Question 16: Palette 16/76

NEET 2022 MCQ

A unique vascular connection between the digestive tract and liver is called______.

A

Hepato-cystic system

B

Hepato-pancreatic system

C

Hepatic portal system

D

Renal portal system

Question 17: Palette 17/76

NEET 2022 MCQ

Arrange the following formed elements in the decreasing order of their abundance in blood in humans:

(a) Platelets

(b) Neutrophils

(c) Erythrocytes

(d) Eosinophils

(e) Monocytes

Choose the most appropriate answer from the options given below:

A

(a), (c), (b), (d), (e)

B

(c), (a), (b), (e), (d)

C

(c), (b), (a), (e), (d)

D

(d), (e), (b), (a), (c)

Question 18: Palette 18/76

NEET 2022 MCQ

Given below are two statements:

Statement I : The coagulum is formed of network of threads called thrombins.

Statement II : Spleen is the graveyard of erythrocytes.

In the light of the above statements, choose the most appropriate answer from the options given below :

A

Both Statement I and Statement II are correct

B

Both Statement I and Statement II are incorrect

C

Statement I is correct but Statement II is incorrect

D

Statement I is incorrect but Statement II is correct

Question 19: Palette 19/76

NEET 2022 MCQ

Which one of the following statements is correct?

A

The atrio-ventricular node (AVN) generates an action potential to stimulate atrial contraction

B

The tricuspid and the bicuspid valves open due to the pressure exerted by the simultaneous contraction of the atria

C

Blood moves freely from atrium to the ventricle during joint diastole.

D

Increased ventricular pressure causes closing of the semilunar valves.

Question 20: Palette 20/76

NEET 2021 MCQ

Persons with 'AB' blood group are called as "Universal recipients". This is due to :

A

Absence of antibodies, anti-A and anti-B, in plasma

B

Absence of antigens A and B on the surface of RBCs

C

Absence of antigens A and B in plasma

D

Presence of antibodies, anti-A and anti-B, on RBCs

Question 21: Palette 21/76

NEET 2021 MCQ

Which enzyme is responsible for the conversion of inactive fibrinogens to fibrins?

A

Thrombokinase

B

Thrombin

C

Renin

D

Epinephrine

Question 22: Palette 22/76

NEET 2020 MCQ

Match the following columns and select the correct option.

Column-I	Column-II
(a) Eosinophils	(i) Immune response
(b) Basophils	(ii) Phagocytosis
(c) Neutrophils	(iii) Release histaminase, destructive enzymes
(d) Lymphocytes	(iv) Release granules containing histamine

A

(A) $ \to $ (iii), (B) $ \to $ (iv), (C) $ \to $ (ii), (D) $ \to $ (i)

B

(A) $ \to $ (iv), (B) $ \to $ (i), (C) $ \to $ (ii), (D) $ \to $ (iii)

C

(A) $ \to $ (i), (B) $ \to $ (ii), (C) $ \to $ (iii), (D) $ \to $ (iv)

D

(A) $ \to $ (ii), (B) $ \to $ (i), (C) $ \to $ (iii), (D) $ \to $ (iv)

Question 23: Palette 23/76

NEET 2020 MCQ

The QRS complex in a standard ECG represents

A

Repolarisation of ventricles

B

Repolarisation of auricles

C

Depolarisation of auricles

D

Depolarisation of ventricles

Question 24: Palette 24/76

NEET 2019 MCQ

What would be the heart rate of a person if the cardiac output is 5L, blood volume in the ventricles at the end of diastole is 100 mL and at the end of ventricular systole is 50 mL ?

A

100 beats per minute

B

125 beats per minute

C

50 beats per minute

D

75 beats per minute

Question 25: Palette 25/76

NEET 2019 MCQ

Match the Column-I with Column-II :
Select the correct option.

A

(a)	(b)	(c)	(d)
(iv)	(i)	(ii)	(iii)

B

(a)	(b)	(c)	(d)
(iv)	(i)	(ii)	(v)

C

(a)	(b)	(c)	(d)
(ii)	(i)	(v)	(iii)

D

(a)	(b)	(c)	(d)
(ii)	(iii)	(v)	(iv)

Question 26: Palette 26/76

NEET 2018 MCQ

Match the items given in column I with those in column II and select the correct option given below.

Column I	Column II
A. Tricuspid valve	(i) Between left atrium and left ventricle
B. Bicuspid valve	(ii) Between right ventricle and pulmonary artery
C. Semilunar valve	(iii) Between right atrium and right ventricle

A

A $ \to $ (i), B $ \to $ (ii), C $ \to $ (iii)

B

A $ \to $ (iii), B $ \to $ (i), C $ \to $ (ii)

C

A $ \to $ (i), B $ \to $ (iii), C $ \to $ (ii)

D

A $ \to $ (ii), B $ \to $ (i), C $ \to $ (iii)

Question 27: Palette 27/76

NEET 2018 MCQ

Match the items given in column I with those in column II and select the correct option given below.

Column I	Column II
A. Fibrinogen	(i) Osmotic balance
B. Globulin	(ii) Blood clotting
C. Albumin	(iii) Defence mechanism

A

A $ \to $ (i), B $ \to $ (iii), C $ \to $ (ii)

B

A $ \to $ (iii), B $ \to $ (ii), C $ \to $ (i)

C

A $ \to $ (ii), B $ \to $ (iii), C $ \to $ (i)

D

A $ \to $ (i), B $ \to $ (ii), C $ \to $ (iii)

Question 28: Palette 28/76

NEET 2017 MCQ

The hepatic portal vein drains blood to liver from

A

stomach

B

kidneys

C

intestine

D

heart.

Question 29: Palette 29/76

NEET 2017 MCQ

Adult human RBCs are enucleate. Which of the following statement(s) is/are most appropriate explanation for this feature?
(1)  They do not need to reproduce.
(2)  They are somatic cells.
(3)  They do not metabolise.
(4)  All their internal space is available for oxygen transport.

A

Only (1)

B

(1), (3) and (4)

C

(2) and (3)

D

Only (4)

Question 30: Palette 30/76

NEET 2016 MCQ

Serum differs from blood in

A

lacking globulins

B

lacking albumins

C

lacking clothing factors

D

lacking antibodies.

Question 31: Palette 31/76

NEET 2016 MCQ

Name the blood cells, whose reduction in number can cause clotting disorder, leading to excessive loss of blood from the body.

A

Erythrocytes

B

Leucocytes

C

Neutrophils

D

Thrombocytes

Question 32: Palette 32/76

NEET 2016 MCQ

Blood pressure in the pulmonary artery is

A

more than that in the pulmonary vein

B

less than that in the venae cavae

C

same as that in the aorta

D

more than that in the carotid.

Question 33: Palette 33/76

NEET 2016 MCQ

In mammals, which blood vessel would normally carry largest amount of urea?

A

Hepatic Vein

B

Hepatic Portal Vein

C

Renal Vein

D

Dorsal Aorta

Question 34: Palette 34/76

NEET 2015 MCQ

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

A

Whale

B

Shark

C

Frog

D

Lizard

Question 35: Palette 35/76

NEET 2015 MCQ

Doctors use stethoscope to hear the sounds produced during each cardiac cycle. The second sound is heard when

A

AV node receives signal from SA node

B

AV valves open up

C

Ventricular walls vibrate due to gushing in of blood from atria

D

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

Question 36: Palette 36/76

NEET 2015 MCQ

Which one of the following is correct?

A

Lymph = Plasma + RBC + WBC

B

Blood = plasma + RBC + WBC + Platelets

C

Plasma = Blood $-$ Lymphocytes

D

Serum = Blood + Fibrinogen

Question 37: Palette 37/76

NEET 2015 MCQ

Erythropoiesis starts in

A

spleen

B

red bone marrow

C

kidney

D

liver

Question 38: Palette 38/76

NEET 2015 MCQ

Blood pressure in the mammalian aorta is maximum during

A

systole of the left ventricle

B

diastole of the right atrium

C

systole of the left atrium

D

diastole of the right ventricle.

Question 39: Palette 39/76

NEET 2014 MCQ

How do parasympathetic neutral signals affect the working of the heart?

A

Reduce both heart rate and cardiac output.

B

Heart rate is increased without affecting the cardiac output.

C

Both heart rate and cardiac output increase.

D

Heart rate decreases but cardiac output increases.

Question 40: Palette 40/76

NEET 2014 MCQ

Person with blood group AB is considered as universal recipient because he has

A

both A and B antigens on RBC but no antibodies in the plasma

B

both A and B antibodies in the plasma

C

no antigen on RBC and no antibody in the plasma

D

both A and B antigens in the plasma but no antibodies.

Question 41: Palette 41/76

NEET 2013 MCQ

The figure shows blood circulation in humans with labels A to D. Select the option which gives correct identification of label and functions of the part.

A

A - Artery-Thick walled and blood flows evenly

B

C - Vein-Thin walled and blood flows in jerks/spurts

C

D - Pulmonary vein-Takes oxygenated blood to heart, pO₂ = 95 mmHg

D

B - Capillary-Thin without muscle layer and wall two cell layers thick

Question 42: Palette 42/76

NEET 2013 MCQ

The figure shows a human blood cell. Identify it and give its characteristics.

A

Blood cell $ \to $ Monocyte, Characteristics $ \to $ Life span of 3 days, produces antibodies

B

Blood cell $ \to $ B-lymphocyte, Characteristics $ \to $ Forms about 20% of blood cells involved in immune response

C

Blood cell $ \to $ Basophil, Characteristics $ \to $ Secretes serotonin, inflammatory response

D

Blood cell $ \to $ Neutrophil, Characteristics $ \to $ Most abundant blood cells, phagocytic

Question 43: Palette 43/76

NEET 2013 MCQ

The diagram given here is the standard ECG of a normal person. The P-wave represents the

A

beginning of the systole

B

end of systole

C

contraction of both the atria

D

initiation of the ventricular contraction.

Question 44: Palette 44/76

NEET 2013 MCQ

The given figure shows schematic plan of blood circulation in humans with labels A to D. Identify the label and give its functions?

A

A - Pulmonary vein - takes impure blood from body parts, pO₂ = 60 mm Hg

B

B - Pulmonary artery - takes blood from heart to lungs, pO₂ = 90 mm Hg

C

C - Vena cava - takes blood from body parts to right auricle, pCO₂ = 45 mm Hg

D

D - Dorsal aorta - takes blood from heart to body parts, pO₂ = 95 mm Hg

Question 45: Palette 45/76

NEET 2012 MCQ

Which one of the following human organs is often called the ''graveyard'' of RBCs?

A

Gall blader

B

Kidney

C

Spleen

D

Liver

Question 46: Palette 46/76

NEET 2012 MCQ

A certain road accident patient with unknown blood group needs immediate blood transfusion. His one doctor friend at once offers his blood. What was the blood group of the donar?

A

Blood group B

B

Blood group AB

C

Blood group O

D

Blood group A

Question 47: Palette 47/76

NEET 2011 MCQ

Given below is the ECG of a normal human. Which one of its components is correctly interpreted below?

A

Complex QRX - one complete pulse

B

Peak T - initiation of total cardiac contraction

C

Peak P and peak R together - systolic and diastolic blood pressures

D

Peak P- initiation of left atrial contraction only

Question 48: Palette 48/76

NEET 2011 MCQ

Which one of the following plasma proteins is involved in the coagulation of blood?

A

Albumin

B

Serum amylase

C

Globulin

D

Fibrinogen

Question 49: Palette 49/76

NEET 2011 MCQ

Which one of the following statements is correct regarding blood pressure?

A

130/90 mm Hg is considered high and requires treatment.

B

100/55 mm Hg is considered an ideal blood pressure.

C

105/50 mm Hg makes one very active.

D

190/110 mm Hg may harm vital organs like brain and kidney.

Question 50: Palette 50/76

NEET 2011 MCQ

'Bundle of his' is a part of which one of the following organs in humans?

A

Brain

B

Heart

C

Kidney

D

Pancreas

Question 51: Palette 51/76

NEET 2011 MCQ

A person with unknown blood group under ABO system, has suffered much blood loss in an accident and needs immediate blood transfusion. His friend who has valid certificate of his own blood type, offers for blood donation without delay. What would have been the type of blood group of the donar friend?

A

Type B

B

Type AB

C

Type O

D

Type A

Question 52: Palette 52/76

NEET 2011 MCQ

Arteries are best defined as the vessels which

A

supply oxygenated blood to the different organs

B

carry blood away from the heart to different organs

C

break up into capillaries which reunite to form a vein

D

carry blood from one visceral organ to another visceral organ.

Question 53: Palette 53/76

NEET 2010 MCQ

Fastest distribution of some injectible material/medicine and with no risk of any kind can be achieved by injecting it into the

A

muscles

B

arteries

C

veins

D

lymph vessels.

Question 54: Palette 54/76

NEET 2010 MCQ

Given below are four statements (i-iv) regarding human blood circulatory system.
(i)  Arteries are thick-walled and have narrow lumen as compared to veins.
(ii)  Angina is acute chest pain when the blood circulation to the brain is reduced.
(iii)  Persons with blood group AB can donate blood to any person with any blood group under ABO system.
(iv)  Calcium ions play a very important role in blood clotting.
Which two of the above statements are correct?

A

(i) and (iv)

B

(i) and (ii)

C

(ii) and (iii)

D

(iii) and (iv)

Question 55: Palette 55/76

NEET 2010 MCQ

The haemoglobin content per 100 ml of blood of a normal healthy human adult is

A

5 - 11 mg

B

25 - 30 mg

C

17 - 20 mg

D

12 - 16 mg.

Question 56: Palette 56/76

NEET 2010 MCQ

Which two of the following changes (i $-$ iv) usually tend to occur in the plain dwellers when they move to high altitudes (3, 500 m or more)?
(i)  Increase in red blood cell size
(ii)  Increase in red blood cell production
(iii)  Increased breathing rate
(iv)  Increase in thrombocyte count
Changes occurring are

A

(ii) and (iii)

B

(iii) and (iv)

C

(i) and (iv)

D

(i) and (ii).

Question 57: Palette 57/76

NEET 2010 MCQ

If due to some injury the chordae tendinae of the tricuspid valve of the human heart is partially non-functional, what will be the immediate effect?

A

The flow of blood into the aorta will be slowed down

B

The 'pacemaker' will stop working

C

The blood will tend to flow back into the left atrium

D

The flow of blood into the pulmonary artey will be reduced

Question 58: Palette 58/76

NEET 2009 MCQ

In a standard ECG which one of the following alphabets is the correct representation of the respective activity of the human heart?

A

S - start of systole

B

T - end of diastole

C

P - depolarisation of the atria

D

R - repolarisation of ventricles

Question 59: Palette 59/76

NEET 2009 MCQ

Globulins contained in human blood plasma are primarily involved in

A

osmotic balance of body fluids

B

oxygen transport in the blood

C

clotting of blood

D

defence mechanisms of body.

Question 60: Palette 60/76

NEET 2009 MCQ

There is no DNA in

A

mature RBCs

B

a mature spermatozoan

C

hair root

D

an enucleated ovum.

Question 61: Palette 61/76

NEET 2009 MCQ

Compared to blood our lymph has

A

plasma without proteins

B

more WBCs and no RBCs

C

more RBCs and less WBCs

D

no plasma.

Question 62: Palette 62/76

NEET 2008 MCQ

Which type of white blood cells are connected with the release of histamine and the natural anticoagulant heparin?

A

Eosinophils

B

Monocytes

C

Neutrophils

D

Basophils

Question 63: Palette 63/76

NEET 2008 MCQ

In humans, blood passes from the post caval to the diastolic right atrium of heart due to

A

stimulation of the sino auricular node

B

pressure difference between the post caval and atrium

C

pushing open of the venous valves

D

suction pull.

Question 64: Palette 64/76

NEET 2008 MCQ

The most active phagocytic white blood cells are

A

cosinophils and lymphocytes

B

neutrophils and monocytes

C

neutrophils and eosinophils

D

lymphocytes and macrophages,

Question 65: Palette 65/76

NEET 2007 MCQ

A drop of each of the following, is placed separately on four slides. Which of them will not coagulate?

A

Blood serum

B

Sample from the thoracic duct of lymphatic system

C

Whole blood from pulmonary vein

D

Blood plasma

Question 66: Palette 66/76

NEET 2006 MCQ

Which one of the following has an open circulatory system?

A

Octopus

B

Pheratima

C

Periplaneta

D

Hirudinaria

Question 67: Palette 67/76

NEET 2004 MCQ

You are required to draw blood from a patient and to keep it in a test tube for analysis of blood corpuscles and plasma. You are also provided with the following four types of test tubes.
which of these you will not use for the purpose.

A

Test tube containing calcium bicarbonate

B

Chilled test tube

C

Test tube containing heparin

D

Test tube containing sodium oxalate.

Question 68: Palette 68/76

NEET 2003 MCQ

The cardiac pacemaker in a patient fails to function normally. The doctors find that an artificial pacemaker is to be grafted in him. It is likely that it will be grafted at the site of

A

atrioventricular bundle

B

Purkinje system

C

sinuatrial node

D

atrioventricular node.

Question 69: Palette 69/76

NEET 2003 MCQ

In the ABO system of blood groups, if both antigens are present but no antibody, the blood group of the individual would be

A

B

B

O

C

AB

D

A.

Question 70: Palette 70/76

NEET 2003 MCQ

Bundle of His is a network of

A

muscle fibres distributed throughout the heart walls

B

muscle fibres found only in the ventricle wall

C

nerve fibres distributed in ventricles

D

nerve fibres found throughout the heart.

Question 71: Palette 71/76

NEET 2002 MCQ

Impulse of heart beat originates from

A

SA node

B

AV node

C

vagus nerve

D

cardiac nerve

Question 72: Palette 72/76

NEET 2002 MCQ

Which of the following statements is true for lymph?

A

WBC + serum

B

Blood $-$ RBCs and some proteins

C

RBCs + WBCs + plasma

D

RBCs + proteins + platelets

Question 73: Palette 73/76

NEET 2001 MCQ

What is correct for blood group O?

A

No antigens but both a and b antibodies are present

B

A antigen and b antibody present

C

Antigen and antibody both absent

D

A and B antigens and a, b antibodies present

Question 74: Palette 74/76

NEET 2000 MCQ

Differennce between pulmonary artery and pulmonary vein is that, the pulmonary artery has

A

no endothelium

B

valves

C

thicker walls

D

oxygenated blood.

Question 75: Palette 75/76

NEET 2000 MCQ

In which point, pulmonary artery is different from pulmonary vein?

A

Its lumen is broad

B

Its wall is thick

C

It has valves

D

It does not posses endothelium.

Question 76: Palette 76/76

NEET 2000 MCQ

Which statement is true for WBC?

A

Non-nucleated

B

In deficiency, cancer is caused

C

Manufactured in thymus

D

Can squeeze through blood capillaries