Question

Define what are capillaries?

Answer 1

Hey mate!!!

➡️Capillaries are the smallest of the body's blood vessels. They are only one cell thick, and they are the sites of the transfer of oxygen and other nutrients from the bloodstream to other tissues in the body; they also collect carbon dioxide waste materials 

Answer 2

1) Any of the fine branching blood vessels that form a network between the arterioles and venules.
2) A tube which has an internal diameter of hair-like thinness.