Given below are four statements (a-d) regarding human blood circulatory system:
 

(a)	Arteries are thick-walled and have narrow lumen as compared to veins.
(b)	Angina is acute chest pain when the blood circulation to the brain is reduced.
(c)	Persons with blood group AB can donate blood to any person with any blood group under the ABO system.
(d)	Calcium ions play a very important role in blood clotting.

Which two of the above statements are correct?

1. (a) and (b)	2. (b) and (c)
3. (c) and (d)	4. (a) and (d)

The hemoglobin content per 100 mL of blood of a normal healthy human adult is
1. 25-30 g
2. 17-20 g
3. 12-16 g
4. 5-11 g

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

Which one of the following human organs is often called the "graveyard" of RBCs?
1. Spleen
2. Liver
3. Gall bladder
4. Kidney

Erythropoiesis starts in
1. Kidney
2. Liver
3. Spleen
4. Red bone marrow

Match the items given in Column I with those in Column II and select the correct option given below:

Codes:

Most cases of CAD result from:

Which among the following is correct during each cardiac cycle?

Two atria are present in the heart of all the following vertebrates except:

Match each item in Column I with one in Column II and select the correct answer from the codes given:

Codes