Across
- 1. This connects the CNS to the rest of the body.
- 4. These aid clotting and tissue repair.
- 6. This includes the brain and spinal cord.
- 7. This is the largest artery in the body.
- 8. What colour blood cells fight infection?
Down
- 1. This carries blood cells, nutrients enzymes and hormones.
- 2. What colour blood cells carry oxygen and removes waste?
- 3. Have one way valves to move blood towards the heart.
- 5. These carry blood rich in oxygen and nutrients away from the heart.
- 6. These facilitate the movement of oxygen and nutrients into the cells.
- 9. This is a muscular organ the size of a human fist.