NEET Biology Body Fluids and Circulation MCQs Set J

Question: Pace maker is situated in heart ..

• a) In the wall of right atrium
• b) On interauricular septum
• c) On interventricular septum
• d) In the wall of left atrium

Answer: In the wall of right atrium

Question: The metal essential for haemoglobin formation is

• a) Mg⁺⁺
• b) Na⁺
• c) Fe⁺⁺ 
• d) Cu⁺⁺

Answer: Fe⁺⁺ 

Question: Largest erythrocyte in vertebrate measuring about 30μ in diameter are found in 

• a) Elephant
• b) Horse
• c) Amphiuma
• d) Lion

Answer: Amphiuma

Question: Which blood vessel has the largest amount of urea?

• a) Renal vein
• b) Hepatic vain
• c) Hepatic portal vein
• d) Dorsal aorta

Answer: Hepatic vain

Question: Blood transfusion is possible between groups

• a) Donor A and recipient O
• b) Donor B and recipient A
• c) Donor AB and recipient O
• d) Donor A and recipient AB

Answer: Donor A and recipient AB

Question: Squeezing of Leucocytes out from the capillary walls to fight foreign agents is known as .

• a) Diapedesis
• b) Diapanse
• c) Diaphysis
• d) Diakinesis

Answer: Diapedesis

Question: If vagus/ parasympathetic nerve to heart is cut, the heart beat will ..

• a) Decrease
• b) Increase
• c) Remain normal
• d) Stop

Answer: Increase

Question: The layer of the heart that forms a smooth, protective lining of the heart chambers and valves is the _______________.

• a) Endocardium
• b) Myocardium
• c) Epicardium
• d) Parietal pericardium

Answer: Endocardium

Question: Blood pressure in the mammalian aorta is maximum during:

• a) Diastole of the right atrium
• b) Systole of the left atrium
• c) Diastole of the right ventricle
• d) Systole of the left ventricle

Answer: Systole of the left ventricle

Question: Which one of the following is correct?

• a) Blood = Plasma + RBC + WBC + Platelets
• b) Plasma = Blood + Lymphocytes
• c) Serum = Blood + Fibrinogen
• d) Lymph = Plasma + RBC + WBC

Answer: Blood = Plasma + RBC + WBC + Platelets

Question: Erythropoiesis starts in :

• a) Red bone marrow
• b) Kidney
• c) Liver
• d) Spleen

Answer: Red bone marrow

Question: Doctors use stethoscope to hear the sound; 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 of blood from atria
• d) Semilunar valves close down after the blood flows into vessels from ventricles

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

Question: MALT constitutes about ___________ percent of the lymphoid tissue in human body.

• a) 50%
• b) 20%
• c) 70%
• d) 10%

Answer: 50%

Question: How do parasympathetic neural signals affect the working of the heart?

• a) Both heart rate and cardiac output increase.
• b) Heart rate decreases but cardiac output increases.
• c) Reduce both heart rate and cardiac output.
• d) Heart rate is increased without affecting the cardiac output.

Answer: Reduce both heart rate and cardiac output.

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

• a) No antigen on RBC and no antibody in the plasma.
• b) Both A and B antigens in the plasma but no antibodies.
• c) Both A and B antigens on RBC but no antibodies in the plasma.
• d) Both A and B antibodies in the plasma.

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

Question: If you suspect major deficiency of antibodies in a person, to which of the following would you look for confirmatory evidence?

• a) Serum globulins
• b) Fibrinogen in plasma
• c) Serum albumins
• d) Haemocytes

Answer: Serum globulins

Question: Reduction in pH of blood will :-

• a) Reduce the rate of heart beat.
• b) Reduce the blood supply to the brain.
• c) Decrease the affinity of hemoglobin with oxygen.
• d) Release bicarbonate ions by the liver.

Answer: Decrease the affinity of hemoglobin with oxygen.

Question: Figure shows schematic plan of blood circulation in humans with labels A to D. Identify the label and give its function/s.

• 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

Answer: C – Vena Cava – takes blood from body parts to right auricle, PCO2 = 45 mm Hg

Question: Blood pressure in the pulmonary artery is :-

• a) Same as that in the aorta.
• b) More than that in the carotid.
• c) More than that in the pulmonary vein.
• d) Less than that in the venae cavae.

Answer: More than that in the pulmonary vein.

More Questions....................................

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

• a) Contraction of both the atria
• b) Initiation of the ventricular contraction
• c) Beginning of the systole
• d) End of systole

Answer: Contraction of both the atria

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

• a) Neutrophils
• b) Thrombocytes
• c) Erythrocytes
• d) Leucocytes

Answer: Thrombocytes

Question: Adult human RBCs are enucleate. Which of the following statement(s) is/are most appropriate explanation for this feature? … (a) They do not need to reproduce (b) They are somatic cells (c) They do not metabolize (d) All their internal space is available for oxygen transport

• a) Only (d)
• b) Only (a)
• c) (a), (c) and (d)
• d) (b) and (c)

Answer: Only (d)

Question: The genotypes of a Husband and Wife are I^AI^B and I^Ai. Among the blood types of their children, how many different genotypes and phenotypes are possible? 

• a) 3 genotypes ; 3 phenotypes
• b) 3 genotypes ; 4 phenotypes
• c) 4 genotypes ; 3 phenotypes
• d) 4 genotypes ; 4 phenotypes

Answer: 4 genotypes ; 3 phenotypes

Question: The two branches of the iliac artery are

• a) femoral and renal
• b) femoral and sciatic
• c) vesiculo-epigastric and femoral
• d) renal and sciatic

Answer: vesiculo-epigastric and femoral

Question: Nature of valves in the heart is

• a) Membranous
• b) Muscular
• c) Tendinous
• d) Ligamentous

Answer: Membranous

Question: Which of the following statements are correct?

• a) Bundle of His originates from the SA node
• b) SA-node is situated in the wall of right auricle
• c) Auricular contraction stimulates the Av-node
• d) AV-node set up the cardiac impulses 72 times per minute

Answer: Auricular contraction stimulates the Av-node

Question:

Assertion: Smaller the organism, higher is the rate of metabolism per gram weight

Reason: The heart rate of six month old baby is much higher than that of an old person

• a) Both assertion and reason are true and reason is the correct explanation of assertion
• b) Both assertion and reason are true but reason is not correct explanation of assertion
• c) Assertion is true but reason is false
• d) Assertion false but reason is true

Answer: Both assertion and reason are true and reason is the correct explanation of assertion

Question: To which organ, does femoral artery supply blood?

• a) Dorsal part of high
• b) All parts of hind limb
• c) Ventral part of hind limb
• d) Rectum

Answer: All parts of hind limb

Question: During ventricular diastole

• a) The auricles relax
• b) The heart contracts
• c) The heart pumps blood
• d) The ventricles relax

Answer: The ventricles relax

Question: Myocardial infarction is caused by

• a) Hardening of arteries
• b) Lumpy thicknesss develop in the inner walls of arteries
• c) Clot may occur in the lumen of a coronary artery
• d) Sudden interruption in blood flow towards a portion of heart

Answer: Sudden interruption in blood flow towards a portion of heart

Question: The two branches of the iliac artery are

• a) Femoral and renal
• b) Femoral and sciatic
• c) Vesiculo-epigastric and femoral
• d) Renal and sciatic

Answer: Vesiculo-epigastric and femoral

Question: Nature of valves in the heart is

• a) Membranous
• b) Muscular
• c) Tendinous
• d) Ligamentous

Answer: Membranous

Question: Which of the following statements are correct?

• a) Bundle of His originates from the SA node
• b) SA-node is situated in the wall of right auricle
• c) Auricular contraction stimulates the Av-node
• d) AV-node set up the cardiac impulses 72 times per minute

Answer: Auricular contraction stimulates the Av-node

Question:

Assertion: Smaller the organism, higher is the rate of metabolism per gram weight

Reason: The heart rate of six month old baby is much higher than that of an old person

• a) Both assertion and reason are true and reason is the correct explanation of assertion
• b) Both assertion and reason are true but reason is not correct explanation of assertion
• c) Assertion is true but reason is false
• d) Assertion false but reason is true

Answer: Both assertion and reason are true and reason is the correct explanation of assertion

Question: To which organ, does femoral artery supply blood?

• a) Dorsal part of high
• b) All parts of hind limb
• c) Ventral part of hind limb
• d) Rectum

Answer: All parts of hind limb

Question: During ventricular diastole

• a) The auricles relax
• b) The heart contracts
• c) The heart pumps blood
• d) The ventricles relax

Answer: The ventricles relax

Question: Myocardial infarction is caused by

• a) Hardening of arteries
• b) Lumpy thicknesss develop in the inner walls of arteries
• c) Clot may occur in the lumen of a coronary artery
• d) Sudden interruption in blood flow towards a portion of heart

Answer: Sudden interruption in blood flow towards a portion of heart

Question: The nerve like modified muscle in the right auricle is known as

• a) lymph node
• b) Atrio-ventricular node
• c) Pacemaker
• d) Bulbs arteriosus

Answer: Pacemaker

Question: The unpaired systemic branch is

• a) Coeliaco-mesentric
• b) Renal artery
• c) Liliac
• d) Vesiculo-epigastric

Answer: Coeliaco-mesentric

Question: Cardiac activity could be moderated by the autonomous neural system. Tick the correct answer:

• a) The parasympathetic system stimulates heart rate and stroke volume
• b) The sympathetic system stimulates heart rate and stroke volume
• c) The parasympathetic system decreases the heart rate but increase stroke volume
• d) The sympathetic system decreases the heart rate but increase stroke volume

Answer: The sympathetic system stimulates heart rate and stroke volume

Question: Which one of the following blood cells is involved in antibody production.

• a) B-Lymphocytes
• b) T-L ymphocytes
• c) RBC
• d) Neutrophils

Answer: B-Lymphocytes

Question: Valves are present in ..

• a) Atria, veins and ventricles
• b) SA node, AV node and arteries
• c) Pacemaker, veins and arteries
• d) All of the above

Answer: Atria, veins and ventricles

Question: When heart beat decreases, the condition is called

• a) Tachycardia
• b) Cardiac arrest
• c) Leucopenia
• d) Bradycardia

Answer: Bradycardia

Question: ECG depicts the depolarisation and repolarisation processes during thecardiac cycle. In the ECG of a normal healthy individual one of thefollowing waves is not represented.

• a) Depolarisation of atria
• b) Repolarisation of atria
• c) Depolarisation of ventricles
• d) Repolarisation of ventricles

Answer: Repolarisation of atria

Question: Which among the following is correct during each cardiac cycle?

• a) The volume of blood pumped out by the right and left ventricles is same
• b) The volume of blood pumped out by the right and left ventricles is different
• c) The volume of blood received by each atrium is different
• d) The volume of blood received by the aorta and pulmonary artery is different

Answer: The volume of blood pumped out by the right and left ventricles is same

Question: The two branches of the iliac artery are

• a) Femoral and renal
• b) Femoral and sciatic
• c) Vesiculo- epigastric and femoral
• d) Renal and sciatic

Answer: Vesiculo- epigastric and femoral

Question: Read the following statements and choose the correct option Statement 1 : Atria receive blood from all parts of the body which subsequently flows to ventricles. Statement 2 : Action potential generated at sino-atrial node passes fromatria to ventricles.

• a) Action mentioned in Statement 1 is dependent on action mentionedin Statement 2
• b) Action mentioned in Statement 2 is dependent on action mentionedin Statement 1
• c) Action mentioned in Statements 1 and 2 are independent of eachother.
• d) Action mentioned in Statements 1 and 2 are synchronous.

Answer: Action mentioned in Statement 2 is dependent on action mentionedin Statement 1

Question: Assertion: Arteries possess smooth muscles on their walls Reason: These smooth muscles help in regulating blood volume flowing through a tissue of organ

• a) Both assertion and reason are true and reason is the correct explanation of assertion
• b) Both assertion and reason are true but reason is not correct explanation of assertion
• c) Assertion is true but reason is false
• d) Assertion false but reason is true

Answer: Both assertion and reason are true and reason is the correct explanation of assertion

Question: Which of the following is the anticoagulant used in blood cell counting?

• a) Acetic acid
• b) Formaldehyde
• c) EDTA
• d) Benzene

Answer: EDTA

Question: Incomplete divided ventricle can be seen in the heart of

• a) Amphibians
• b) Reptiles
• c) Crocodiles
• d) Fish

Answer: Reptiles

Question: Which organ receives only oxygenated blood?

• a) Lung
• b) Liver
• c) Spleen
• d) Gill

Answer: Spleen

Question: The liquid part of blood after the fibrinogen is removed is

• a) Plasma
• b) Lymph
• c) Serum
• d) Puss

Answer: Serum

Question: The sinoatrial node is derived from the more primitive

• a) Ventricle
• b) Bundle of His
• c) Conusarteriosus
• d) Sinus venosus

Answer: Sinus venosus

Question: Which one of the following is not part of the cardiovascular system?

• a) Arteries
• b) Heart
• c) Blood
• d) Veins

Answer: Veins

Question: Fluid is driven through the lymphatic system by:

• a) Contraction of the walls of the lymphatic vessels
• b) Pressure created by the pumping of the heart
• c) Squeezing of the lymphatic vessels by the body's muscles
• d) Contractions of the lymph nodes

Answer: Squeezing of the lymphatic vessels by the body's muscles

Question: Which of the following is a type of leukocyte?

• a) Macrophage
• b) Eosinophil
• c) Monocyte
• d) All of the above

Answer: All of the above

Question: To which organ, does femoral artery supply blood

• a) Dorsal part of thigh
• b) All parts of hind limb
• c) Ventral part of hind limb
• d) Rectum

Answer: All parts of hind limb

Question: Starling law is related to

• a) Partial heart block
• b) Venous return to heart
• c) Frequency of heart beat
• d) Force of heart beat

Answer: Force of heart beat

Question: The ion that always keeps the cardiac muscle unit in contracting state is

• a) Sodium
• b) Potassium
• c) Calcium
• d) Magnesium

Answer: Calcium

Question: In the human heart the 1) left auricle has opening of pulmonary veins and receives deoxygenated blood from lungs 2) right auricle opens into the right ventricle and the auriculoventricularaperature is guarded by bicuspid valve 3) Valves are attached to the wall of ventricles by means of chordate tendinae 4) opening of left auricle into left ventricle is guarded by tricuspid valve Correct statements are:-

• a) 1 and 4
• b) 2 and 3
• c) 1 and 3
• d) All four

Answer: 1 and 3