Across
- 3. smallest blood vessels in our body
- 4. a muscular organ about the size of our fist
- 6. Most important organ in our body
- 7. a gas you need
- 8. transport oxygen,digested food and water to all parts of the body
- 9. another type of blood vessels
Down
- 1. a type of blood vessels
- 2. the number of times the heart beats per minute
- 5. biggest blood vessels in our body
- 6. a tube that carries blood