Question

The diagram shows a vertical section through the heart.

What are the functions of the numbered blood vessels?

	Carries blood to body	Carries blood to lungs	Carries blood from lungs	Carries blood from body
(a)	1	2	3	4
(b)	1	3	4	2
(c)	2	4	3	1
(d)	3	1	4	2

A. (a) B. (b) C. (c) D. (d)

Answer 1

1- pulmonary artery 

2- vena cava 

3- aorta 

4- pulmonary vein