Question

1. Why do you think capillaries have very thin walls?​

Answer 1

Capillaries are thin walled because, Molecules such as oxygen, water and lipids canpass through them by diffusion. The function of capillaries is to allow food and oxygen to diffuse to cells, and hence, to allow this process, 'Capillaries are thin

Answer 2

because it is the connecting tube like structure vessels which connect arteries and veins together and connect them to the body organs