Download 3. Another term that means segmented

Annelid Vocab and Note Review
Across
2. The thickened saddlelike portion of certain midbody segments of many oligochaetes and leeches
3. Another term that means segmented
4. One of the segmentally arranged, paired excretory tubules of many invertebrates, specialized for
excretion and osmoregulation
6. Situated on the lower or abdominal surface of an animal
8. Peritoneal fold serving to hold hte viscera in position
9. Food is stored here, before leaving to go to the gizzard
12. The brain of earthworms (located above the pharnyx)
13. Any ringlike structure, such as superficial rings on leeches and earthworm
15. A needlelike chitinous structure of the integument/skin of annelids, used for movement
16. This is the Phylum name for the group of animals in which earthworms are an example
18. The class you are in right now!
19. This type of skeleton is a mass of fluid enclosed within a muscular wall to provide support necessary
for muscle action
21. THis prefix means middle
22. An example of the Class Hirudinea
23. The digestive organ that grinds food into small pieces
Down
1. An example of the Class Polychaeta (Hint: look at the bottom of page 357)
5. Earthworms have five pairs of these, which function in maintaining a steady pressure of blood in the
ventral blood vessel
7. This prefix means water
10. The anterior closure of a metameric animal, anterior to the mouth
11. One of the paired lateral processes on each side of most segments on polychaete annelids, modified
for locomotion, respiration and/or feeding
12. The body cavity in many triploblastic animals, lined with mesodermal peritoneum
14. Toward the back or upper surface of an animal
17. Annelids have this type of circulatory system
20. An example of the Class Oligochaeta
24. Animals without a backbone