Topic 9.1 & 9.2 Vocabulary

An organ system of blood vessels with a pump (heart) and valves to ensure the one-way flow of blood.

Any of the tubes through which blood flows in the body.

The red liquid that is sent around the body by the heart, and carries oxygen and important substances to organs and tissue, and removes waste products.

A structure that opens and closes to control the flow of blood in the heart and the veins.

The four hollow spaces within the heart.

A blood vessel through which blood travels away from the heart.

A blood vessel through which blood travels towards the heart.

The smallest blood vessel with walls only one cell thick.

Relating to the lungs.

Blood that has been enriched with oxygen in the lungs.