Medical Quiz

Body Fluids & Circulation Quiz


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Adult human RBCs are enucleated. 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 & 4

C. 2 & 3

D. only 4


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 the blood will be immediate slowed down

B. The ‘Pace maker’ will stop working

C. The blood tends to flow back into the left atrium

D. The flow of blood into the pulmonary artery will be reduced


Arteries are best defined as the blood vessels which

A. Supply oxygenated blood to the different organs

B. Carry blood away from the heart to different organs

C. Breakup into capillaries which reunite to form vein

D. Carry blood from one visceral organ to another visceral organ


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

A. Hepatic vein

B. Hepatic portal vein

C. Renal vein

D. Dorsal aorta


The hepatic portal vein drains blood to liver from?

A. Stomach

B. kidneys

C. Brain

D. Heart


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

A. Blood Group B

B. Blood group AB

C. Blood group O

D. Blood group A


The heart beat is maximum in.

A. Adult males

B. Foetus

C. Elderly people

D. Adult females


Blood pressure in 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


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

A. Both A & B antigens on RBC but no antibodies in the plasma

B. Both A & B antibodies in the plasma

C. No antigen on RBC & no antibody in the plasma

D. Both A & B antigens in the plasma but no antibodies


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

A. AV nodes receives signal from SA node

B. All valves open up

C. Ventricular walls vibrate due to gushing in of blood from atria

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


Erythropoiesis starts in

A. Spleen

B. Red bone marrow

C. Kidney

D. Liver


Serum differs from blood in

A. Lacking globulins

B. Lacking albumins

C. Lacking clotting factors

D. Lacking antibodies


Pulse pressure is ______ mm Hg

A. 40

B. 25

C. 120

D. 80


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

A. 130/90 mm Hg is considered high & 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 & kidney


In cardiac cycle, blood pressure is maximum during

A. Atrial systole

B. Atrial diastole

C. Ventricular systole

D. Ventricular diastole


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


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

A. Erythrocyte

B. Leucocyte

C. Neutrophils

D. Thrombocytes


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

A. Stimulation of Sino auricular node

B. Pressure difference between the post caval & atrium

C. Pushing open of the venous valves

D. Suction pull


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

A. Reduce both heart rate & cardiac output

B. Heart rate is increased without affecting cardiac output

C. Both the heart rate & cardiac output increase

D. Heart rate decreases but cardiac output increases


Fastest distribution of some injectable material/ medicine & without any risk can be acchieved by injecting it into the

A. Muscles

B. Arteries

C. Veins

D. Lymph vessels


Which two of the following changes usually tend to occur in the plain dwellers when they move into high altitudes?

1. Increase in RBC’s size

2. Increase in RBC production

3. Increased breathing rate

4. Increased thrombocyte count

A. 1 & 4

B. 1 & 2

C. 2 & 3

D. 3 & 4


Which one of the following organ are often called as “graveyard” of RBC

A. Gall bladder

B. Kidney

C. Liver

D. Spleen


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

A. Complex QRS one complete pulse

B. Peak T – initiation of total cardiac contraction

C. Peak P & Peak R together – Systolic & diastolic blood pressures

D. Peak P – initiation of left atrial contraction only


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

A. Albumin

B. Serum amylase

C. Globulin

D. Fibrinogen


Which one of the following animals has two seperate circulatory pathways

A. Whale

B. Shark

C. Frog

D. Lizard




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