| A | B |
|---|
| Annelids | earthworms, leeches, marine worms |
| Annelida | phylum name; means "little rings" |
| Setae | special whisker-like structures that earthworms use to grasp soil and move |
| Crop | a storage area for food |
| Gizzard | special structures used to grind food (act like teeth) |
| Intestine | used to distribute nutrients into blood vessels or help remove undigested food |
| Waste Removal Tubes | tubes that are located on each segment on the earthworm; help remove waste |
| Clitellum | special segment on worms that indicate sexual maturity; where cocoon develops |
| Anesthetic | a "pain-numbing" chemical produced in leech saliva |
| Anticoagulant | a special chemical that prevents blood from clotting; found in leech saliva |
| Leech Therapy | when leeches are used to help treat serious injuries such as limb reattachment; help prevent blood clots and improve circulation |
