Across
- 3. A flap inside the heart that makes sure blood blows in the right direction
- 9. A blood vessel that carries blood away from the heart.
- 10. The type of muscle found in the heart.
- 11. The body system that carries materials such as oxygen, nutrients, and waste products around the body. It consists of the heart, blood vessels and blood.
- 12. The liquid part of your blood that is made up of salt water, proteins and nutrients.
- 13. The narrowest blood vessel that reaches nearly every cell of the body.
Down
- 1. Platelets are in our blood and help our blood to clot.
- 2. A cell inside your blood that carries oxygen.
- 4. A substance in your red blood cells that carries oxygen.
- 5. The organ in your body that pumps blood.
- 6. A structure that contains at least two different types of tissue that work together to complete a task.
- 7. A blood vessel that carries blood back to the heart.
- 8. A cell that is inside your blood that fights infection.