Across
- 2. A strong muscle that pumps blood around the body.
- 5. Organs in the chest that take in oxygen from the air and remove carbon dioxide.
- 8. The system made up of the heart, blood, and blood vessels that moves blood, oxygen, and nutrients around the body
- 9. Substances in food (like vitamins, minerals, proteins, and sugars) that the body needs to grow and stay healthy.
- 10. The number of times your heart beats in one minute; can be felt in arteries.
- 11. Tissues in the body that can contract (tighten) and relax to produce movement.
Down
- 1. A waste gas made in the body when energy is released from food; breathed out through the lungs.
- 3. Tubes (arteries, veins, and capillaries) that carry blood through the body.
- 4. The red liquid that carries oxygen, nutrients, and waste products around the body.
- 6. A gas that the body needs to release energy from food.
- 7. Substances that change the way the body works; they can be medicines or harmful substances.