NEET Biology Body Fluids and Circulation MCQs Set D

Question: Typical 'lubb-dup' sound heard in heart beat are due to

• a) Closing of bicuspid and tricuspid valves followed by semilunar valves
• b) Closing of semilunar valves
• c) Blood pressure through aorta
• d) Closure of bicuspid valves

Answer: Closing of bicuspid and tricuspid valves followed by semilunar valves

Question: Rh^- mother carries Rh⁺ foetus. the foetus is at risk of disease called 

• a) Haemophilia
• b) haemolytic disease
• c) Tuberculosis
• d) Syphilis

Answer: haemolytic disease

Question: For safe blood transfusion

• a) Donor's RBC should not contain antibodies against recipient's serum
• b) Recipient's serum should not contain antigens against donor's antibodies
• c) Recipient's serum should not contain antibodies against RBC of donors
• d) Recipient's RBC should not contain antibodies against donors antigens

Answer: Recipient's serum should not contain antibodies against RBC of donors

Question: Valves which allows blood from ventricles into arteries and not in opposite direction are

• a) Aortic valve and mitral valve
• b) AV valves and semilunar valve
• c) Bicuspid valve and tricuspid valve
• d) Semilunar valves

Answer: AV valves and semilunar valve

Question: Which cranial nerve supplies heart?

• a) Vegus
• b) Facial
• c) Trochlear
• d) Auditory

Answer: Vegus

Question: A doctor suggested to a couple not to have more than one child because of

• a) Rh⁺ male and Rh^- female
• b) Rh^- male and Rh⁺ female 
• c) Rh⁺ male and Rh⁺ female
• d) Rh^- male and Rh^- female

Answer: Rh⁺ male and Rh^- female

Question: Blood transfusion is not possible from

• a) AB to O
• b) O to AB
• c) O to B
• d) O to A

Answer: AB to O

Question: Factor present on surface of RBC related to heredity are

• a) Blood groups
• b) Antigens
• c) Antibodies
• d) Haemoglobin

Answer: Antigens

Question: Normal blood glucose level is

• a) 50- 80 mg/100 ml
• b) 50- 100 mg/100 ml
• c) 80- 100 mg/100 ml
• d) 80- 300 mg/100 ml

Answer: 80- 100 mg/100 ml

Question: Artificial cardiac pace-maker is connected to

• a) AV node
• b) SA node
• c) AV bundle
• d) Purkinje system

Answer: SA node

Question: To which organ does femoral artery supply blood

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

Answer: Dorsal part of thigh

Question: A person with blood group 'O' is capable of donating blood to person with blood group

• a) AB
• b) A
• c) B
• d) O, AB, A or B

Answer: O, AB, A or B

Question: The hormone that stimulate heart beat is

• a) Thyroxine
• b) Adrenaline
• c) Glucagon
• d) Gastrin

Answer: Adrenaline

Question: Abnormal fall in total count of WBCs in the human blood is called

• a) Anaemia
• b) Polycythemia
• c) Leucopenia
• d) Leukemia

Answer: Leucopenia

Question: Which one carries oxygen?

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

Answer: Blood

Question: A blood group has both A and B antigens but no antibodies. It is

• a) A
• b) O
• c) AB
• d) B

Answer: AB

Question: Find the matching pair

• a) Lubb-sharp closure of AV valves at beginning of ventricular systole
• b) Dup-sudden opening of semilunar valves at the beginning of ventricular systole
• c) Pulsation of radical artery-valves in blood vessels
• d) Initiation of heart beat-Purkinje fibre

Answer: Lubb-sharp closure of AV valves at beginning of ventricular systole

Question: Heart is neurogenic in

• a) Mussel
• b) Frog
• c) Limulus
• d) Human

Answer: Limulus

Question: During blood coagulation, vitamin K helps in

• a) Formation of prothrombin
• b) Formation of thromboplastin
• c) Conversion of fibrinogen into fibrin
• d) Conversion of prothrombin to thrombin

Answer: Formation of prothrombin

Question: Valve of Thebesius occurs in the heart of

• a) Fish
• b) Frog
• c) Rabbit
• d) Chameleon

Answer: Rabbit

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

Question: Anemia is due to deficiency of

• a) Leucocytes
• b) Blood
• c) Haemoglobin
• d) Thrombocytes

Answer: Haemoglobin

Question: Pulmonary vein carries

• a) Deoxygenated blood
• b) Oxygenated blood
• c) Mixed blood
• d) None of the above

Answer: Oxygenated blood

Question: Oxygenated blood is carried by

• a) Pulmonary vein
• b) Pulmonary artery
• c) Hepatic portal vein
• d) Renal vein

Answer: Pulmonary vein

Question: SA node is located

• a) Upper lateral wall of left atrium
• b) Lower dorsal wall of left atrium
• c) Upper dorsal wall of right atrium
• d) Lower lateral wall of right atrium

Answer: Upper dorsal wall of right atrium

Question: Blood group cannot be given to B group patient because

• a) Patient has antibodies b
• b) Patient lacks antibodies b
• c) Patient lacks antibodies a
• d) Patient has antibodies a

Answer: Patient has antibodies a

Question: Person with AB blood group can receive blood from

• a) AB only
• b) O only
• c) Both A and B
• d) All the above

Answer: All the above

Question: In Prawn, the heart pumps

• a) Deoxygenated blood
• b) Oxygenated blood
• c) Both A and B
• d) Mixed blood

Answer: Oxygenated blood

Question: Which one represents pulmonary circulation

• a) Left auricle ( oxygenated blood) → Lungs ( deoxygenated blood) → Right auricle
• b) Left auricle ( deoxygenated blood) → Lungs ( oxygenated blood) → Right auricle
• c) Left auricle ( oxygenated blood) → Lungs (deoxygenated blood) → Left auricle
• d) Right auricle ( deoxygenated blood) → Lungs ( oxygenated blood) → Left auricle

Answer: Right auricle ( deoxygenated blood) → Lungs ( oxygenated blood) → Left auricle

Question: Blood pressure is controlled by

• a) Thyroid gland
• b) Adrenal gland
• c) Thymus gland
• d) Parathyroid gland

Answer: Adrenal gland

Question: In mature RBC, nucleus is present in

• a) Rabbit
• b) Frog
• c) Both Rabbit and frog
• d) Neither in frog and rabbit

Answer: Frog

Question: which is true of blood group agglutination test?

• a) Blood group AB when coagulation occurs with antiserum A
• b) Blood group B when coagulation occurs with antiserum B
• c) Blood group O when coagulation occurs with antiserum A as well as B
• d) None of the above

Answer: Blood group B when coagulation occurs with antiserum B

Question: Which is transmitted through serum

• a) Venereal diseases
• b) Hepatitis B
• c) Tuberculosis
• d) Both a) and b)

Answer: Both a) and b)

Question: Which ones of the following statements are wrong? (a) Leucocytes disintegrate in spleen and liver (b) RBC, WBC and blood platelets are produced by bone marrow (c) Neutrophils bring about destruction and detoxification of toxins of protein origin (d) Important function of lymphocytes is to produce antibodies Options

• a) a and b only
• b) a and d only
• c) a and c only
• d) b and c only

Answer: a and c only

Question: Heart beats originate from

• a) Left atrium
• b) Right ventricle
• c) Cardiac muscles
• d) Pace maker

Answer: Pace maker

Question: In ECG deflection wave, ventricular systole occurs during

• a) PQ
• b) PQR
• c) QR
• d) T

Answer: T

Question: Raising of pH of blood shall result in

• a) Inhibition of carbonic anhydrase
• b) Production of carbon monoxide and causing poisoning
• c) Non-release of carbon dioxide from carbonic acid and carbonates
• d) Non-dissociation of oxygen from oxyhemoglobin

Answer: Inhibition of carbonic anhydrase

Question: Origin of heart beat and its conduction is represented by

• a) AV node → Bundle of His → SA node → Purkinje fibres
• b) SA node → Purkinje fibres→ AV node → Bundle of His
• c) Purkinje fibres→ AV node → SA node → Bundle of His
• d) SA node → AV node → Bundle of His → Purkinje fibres

Answer: SA node → AV node → Bundle of His → Purkinje fibres

Question: Systemic circulation of oxygenated blood starts from

• a) Right atrium
• b) Left atrium
• c) Left ventricle
• d) Right ventricle

Answer: Left ventricle

Question: Life span of blood platelets is

• a) 1 -2 days
• b) 2 -3 days
• c) 3 - 4 days
• d) 5 -9 days

Answer: 5 -9 days

Question: What is true about vein?

• a) All veins carry deoxygenated blood
• b) All veins carry oxygenated blood
• c) They carry blood from organs towards heart
• d) They carry blood from heart towards the organs

Answer: They carry blood from organs towards heart

Question: The sequence of cardiac cycle is

• a) Atrial systole → Ventricular systole →Ventricular diastole →Atrial diastole 
• b) Diastole → Atrial → Ventricular diastole
• c) Atrial systole → Ventricular diastole → Ventricular systole
• d) Ventricular diastole → Diastole → Ventricular systole → Atrial systole.

Answer: Atrial systole → Ventricular systole →Ventricular diastole →Atrial diastole 

Question: Pathway of myogenic impulse conduction is

• a) SAN → AVN → Bundle of His → Purkinje fibres
• b) SAN → AVN → Purkinje fibres→ Bundle of His
• c) AVN → SAN → Bundle of HIs → Purkinje fibres
• d) AVN → Bundle of His → SAN → Purkinje fibres

Answer: SAN → AVN → Bundle of His → Purkinje fibres

Question: Pathway of myogenic impulse conduction is

• a) SAN → AVN → Bundle of His → Purkinje fibres
• b) SAN → AVN → Purkinje fibres→ Bundle of His
• c) AVN → SAN → Bundle of HIs → Purkinje fibres
• d) AVN → Bundle of His → SAN → Purkinje fibres

Answer: SAN → AVN → Bundle of His → Purkinje fibres

Question: Blood has defective haemoglobin in

• a) Sickle cell anaemia
• b) Haemophilia
• c) Haematuria
• d) Haematoma

Answer: Sickle cell anaemia

Question: Pulmonary trunk and aorta are attached by

• a) Chordae tendineae
• b) Ligamentumarteriosum
• c) Coronary suclus
• d) Pericardium

Answer: Ligamentumarteriosum

Question: Which one have open circulatory system

1. Ascidia   2. Cockroach   3. Earthworm   4. Prawn  5. Silver Fish   6. Snail.   7. Squid

• a) 2, 4, 6
• b) 1, 2, 4, 6
• c) 3, 4, 5, 7
• d) 2, 4, 5, 6

Answer: 2, 4, 5, 6

Question: The vein that does not open in heart is

• a) Precaval
• b) Postcaval
• c) Pulmonary
• d) Superior mesenteric

Answer: Superior mesenteric

Question: People living at sea level have around 5 million RBC/mm of blood where as those living at an altitude of 5400 m have around 8 million. This is due to

• a) There is more UV radiation which enhance RBCs production
• b) People eat more nutritive food which helps in formation of more RBCs
• c) People get pollution free air to breathe with more oxygen becoming available
• d) Atmospheric O₂ is less so that more RBSs are needed to absorb the required amount of O₂ to survive

Answer: Atmospheric O₂ is less so that more RBSs are needed to absorb the required amount of O₂ to survive

Question: Which one contains minimum urea?

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

Answer: Renal vein

Question:  Number of leucocytes present in one mm³ of blood is

• a) 5000 - 8000
• b) 2000 - 3000
• c) 8000 - 13000
• d) million to 1.5 million

Answer: 5000 - 8000

Question: Which one is hypothetical coagulating factor?

• a) Accelerin
• b) Christmas factor
• c) Lakilovand factor
• d) Stuart factor

Answer: Accelerin

Question: Which one is not true about chordae tendineae? They

• a) are stripes of muscles fibres
• b) are attached to valves
• c) regulate opening of valves
• d) prevent back flow of blood

Answer: are stripes of muscles fibres

Question: Wall of heart is covered externally by

• a) Epicardium
• b) Epithelium
• c) Endothelium
• d) Glisson's capsule

Answer: Epicardium

Question: Valves present between right auricle and right ventricle is

• a) Mitral valve
• b) Tricuspid valve
• c) Bicuspid valve
• d) Semilunar valve

Answer: Tricuspid valve

Question: Which one is single cell in thickness

• a) Venule
• b) Arteriole
• c) Blood capillary
• d) Artery

Answer: Blood capillary

Question: Mixing of oxygenated and deoxygenated blood occurs in the ventricle of

• a) Scoliodon
• b) Frog
• c) Rabbit
• d) Pigeon

Answer: Frog

Question: Valve present over left auriculo-ventricular opening is

• a) Semilunar valve
• b) Tricuspid valve
• c) Valve of Thebesius
• d) Bicuspid

Answer: Bicuspid

Question: In ABO system of blood grouping, transfusion is not possible from

• a) A to AB
• b) B to AB
• c) O to AB
• d) A to O

Answer: A to O

Question: Cardiac output is

• a) 4 litres/minute
• b) 5.3 litres/minute
• c) 6.3 litres/minute
• d) 7.3 litres/minute

Answer: 5.3 litres/minute

Question: Increase in number of leucocytes beyond normal indicates

• a) Anaemia
• b) Infection
• c) increased defence against pathogen
• d) Non-formation of RBC

Answer: Infection