Match these items. Match the items in the left column to the items in the right column.

Put responses in the correct input to answer the question. Select a response, navigate to the desired input and insert the response. Responses can be selected and inserted using the space bar, enter key, left mouse button or touchpad. Responses can also be moved by dragging with a mouse.
where chemicals pass between cells and blood
an atmospheric gas expelled by body cells
a vessel that carries blood away from the heart
the liquid that carries chemicals and blood cells through the circulation
air sacs within the lungs
a lower part of the heart
any of the arteries, veins or capillaries that carry blood through the body
vessels that carry blood back to the heart
an upper part of the heart
need food and oxygen to live
the thin-walled tube which carries air from the nose and mouth into the lungs
the liquid part of blood left over after clotting has taken place
help to stop bleeding
carry oxygen to the cells and take carbon dioxide away
help the body fight infection