Given alongside is a diagram of human heart showing its internal structures. Label the parts marked 1 to 6, and
answer the following questions.

a.Which types of blood is carried by the blood vessel marked 2?
b.Name the main artery which takes the blood from heart to different parts of the body?
c.Which chamber of the heart receives deoxygenated blood from the body?
d.Which chamber of the heart receives oxygenated blood from the lungs?