MERIT YARD

[Body Fluids and Circulation - VVI MCQs - MERIT YARD]

Question 1 / 40Which of the following is known as the 'Universal Donor' blood group?

A) AB+

B) A-

C) O-

D) B+

Question 2 / 40The duration of a single cardiac cycle in a healthy human is:

A) 0.1 second

B) 0.5 second

C) 0.8 second

D) 1.2 seconds

Question 3 / 40Which leukocyte is most abundant in human blood?

A) Lymphocytes

B) Neutrophils

C) Monocytes

D) Eosinophils

Question 4 / 40'LUBB' sound of the heart is caused by:

A) Closure of AV valves

B) Closure of semilunar valves

C) Opening of AV valves

D) Blood hitting the aorta

Question 5 / 40The pace-maker of the human heart is:

A) AV Node

B) Purkinje fibres

C) SA Node

D) Bundle of His

Question 6 / 40In ECG, the QRS complex represents:

A) Atrial depolarization

B) Ventricular depolarization

C) Atrial repolarization

D) Ventricular repolarization

Question 7 / 40Erythroblastosis fetalis occurs when:

A) Mother Rh+, Fetus Rh-

B) Mother Rh-, Fetus Rh+

C) Both are Rh-

D) Both are Rh+

Question 8 / 40Which of the following help in blood clotting?

A) RBCs

B) WBCs

C) Platelets

D) Serum

Question 9 / 40Serum differs from blood in lacking:

A) Antibodies

B) Clotting factors

C) Albumins

D) Globulins

Question 10 / 40T-wave in ECG represents:

A) Beginning of systole

B) Ventricular contraction

C) Return of ventricles to normal state

D) Atrial contraction

Question 11 / 40Heart of Cockroach has how many chambers?

A) 3

B) 4

C) 2

D) 13

Question 12 / 40Which of the following blood vessels contains the least amount of urea?

A) Hepatic vein

B) Renal vein

C) Renal artery

D) Hepatic portal vein

Question 13 / 40Vitamin essential for blood coagulation is:

A) Vitamin A

B) Vitamin C

C) Vitamin K

D) Vitamin E

Question 14 / 40The normal blood pressure of a healthy human is:

A) 120/80 mm Hg

B) 80/120 mm Hg

C) 100/50 mm Hg

D) 150/90 mm Hg

Question 15 / 40Lymph consists of:

A) RBCs + WBCs + Plasma

B) WBCs + Plasma

C) RBCs + Proteins

D) Only Platelets

Question 16 / 40The valve present between Right Atrium and Right Ventricle is:

A) Bicuspid valve

B) Tricuspid valve

C) Mitral valve

D) Semilunar valve

Question 17 / 40Average life span of human RBC is:

A) 10 days

B) 60 days

C) 120 days

D) 200 days

Question 18 / 40Angina pectoris is a symptom of:

A) Lung infection

B) Heart disease

C) Kidney failure

D) Liver cirrhosis

Question 19 / 40Hepatic portal vein carries blood from:

A) Liver to Heart

B) Intestine to Liver

C) Kidney to Liver

D) Heart to Liver

Question 20 / 40The machine used to record ECG is called:

A) Electrocardiograph

B) Sphygmomanometer

C) Stethoscope

D) Haemocytometer

Question 21 / 40Universal recipient blood group is:

A) O+

B) AB+

C) A-

D) B-

Question 22 / 40A person with 'O' blood group has:

A) A and B antigens

B) No antigens on RBC

C) No antibodies in plasma

D) Rh antigen only

Question 23 / 40Agranulocytes are:

A) Lymphocytes and Monocytes

B) Neutrophils and Basophils

C) Eosinophils and Monocytes

D) Lymphocytes and Eosinophils

Question 24 / 40Wall of which chamber of the heart is thickest?

A) Right Atrium

B) Left Atrium

C) Right Ventricle

D) Left Ventricle

Question 25 / 40The opening between Left Atrium and Left Ventricle is guarded by:

A) Tricuspid valve

B) Bicuspid (Mitral) valve

C) Eustachian valve

D) Thebesian valve

Question 26 / 40Total volume of blood pumped by each ventricle per minute is:

A) Stroke volume

B) Cardiac output

C) Tidal volume

D) Vital capacity

Question 27 / 40Heart failure is:

A) Heart not pumping blood effectively

B) Heart stops beating

C) Damage to heart muscles

D) Chest pain

Question 28 / 40Mineral ion essential for blood clotting is:

A) Magnesium

B) Calcium

C) Iron

D) Sodium

Question 29 / 40Which organ is called the 'Graveyard of RBCs'?

A) Spleen

B) Liver

C) Bone marrow

D) Kidney

Question 30 / 40Systemic circulation starts from:

A) Right atrium

B) Left atrium

C) Right ventricle

D) Left ventricle

Question 31 / 40Pulse rate is measured from:

A) Vein

B) Artery

C) Capillary

D) Nerve

Question 32 / 40Normal cardiac output is about:

A) 1 Litre

B) 5 Litres

C) 10 Litres

D) 72 Litres

Question 33 / 40High blood pressure is called:

A) Hypertension

B) Hypotension

C) Heart attack

D) Bradycardia

Question 34 / 40Rh factor was first discovered in:

A) Human

B) Monkey

C) Rabbit

D) Rat

Question 35 / 40Hemoglobin is a:

A) Respiratory pigment

B) Vitamin

C) Carbohydrate

D) Hormone

Question 36 / 40Heparin is an:

A) Antibody

B) Anticoagulant

C) Enzyme

D) Antigen

Question 37 / 40Histamine is secreted by:

A) Neutrophils

B) Basophils

C) Monocytes

D) Lymphocytes

Question 38 / 40SA node is located in:

A) Right atrium

B) Left atrium

C) Right ventricle

D) Left ventricle

Question 39 / 40The pH of human blood is:

A) 6.4

B) 7.4

C) 8.4

D) 7.0

Question 40 / 40Which wave of ECG is used to count the heart rate?

A) P wave

B) QRS complex

C) T wave

D) PR segment