Match the terms in Column (A) with those in Column (B)

Column A	Column B
(a) Trypsin	(i) Pancreas
(b) Amylase	(ii) Liver
(c) Bile	(iii) Gastric glands
(d) Pepsin	(iv) Saliva

Why do veins have thin walls as compared to arteries?

What are the functions of gastric glands present in the wall of the stomach?

Name the correct substrates for the following enzymes:

(a) Trypsin (b) Amylase (c) Pepsin (d) Lipase

What will happen if platelets were absent in the blood?