Do worms have hearts?

Related questions

1. What is the function of Rostellum?
2. Do Tapeworms have a digestive system?
3. Which are characteristics of flukes?
4. What is the difference between a mature and gravid Proglottid?
5. Where are flukes found?
6. What is colon cancer pain like?
7. Are flukes free living?
8. Can having a tapeworm kill you?
9. Do butterflies have brains?
10. What will happen if pinworms are not treated?

Tags

1. #hearts
2. #their
3. #moving
4. #around
5. #worms
6. #doesn
7. #system
8. #circulatory
9. #because
10. #complicated
11. #kinds
12. #parts
13. #beneath
14. #muscles
15. #heartbeats
16. #heart
17. #blood
18. #maybe