1. STARFISH DISSECTION

2. STARFISH LATIN meaning ANIMALIA ASTEROIDEA “star-like”
KINGDOM _____________
PHYLUM _____________________________
CLASS _______________________________
ANIMALIA
ECHINODERMATA “spiny skin”
ASTEROIDEA “star-like”

3. PENTARADIAL (5 armed starfish)

4. INVERTEBRATES (No backbone)
ALL INVERTEBRATES ARE PROTOSTOMES EXCEPT
ECHINODERMS
ONLY INVERTEBRATES that are DEUTEROSTOMES

5. ORAL VIEW

7. EYESPOTS
Sense light/dark

9. WATER VASCULAR SYSTEM
BIODIDAC

11. ORAL VIEW
MOUTH

13. AMBULACRAL GROOVE
TUBE FEET sit in GROOVE

14. TUBE FEET Used for feeding & locomotion

15. CUT TRIVIUM

16. DIGESTIVE GLAND
Makes BILE
ABSORBS NUTRIENTS

18. 2 part STOMACH

19. CARDIAC stomach connects to mouth (extruded during feeding)
CARDIAC stomach connects to mouth (extruded during feeding)
PYLORIC stomach connects to digestive glands and ANUS

20. EUCOELOM OPEN CIRCULATION

22. WATER VASCULAR SYSTEM
BIODIDAC

24. GONADS

25. AMBULACRAL RIDGE covered by OSSICLES contains RADIAL NERVE (nervous)
AMBULACRAL RIDGE covered by OSSICLES
contains RADIAL NERVE (nervous)
RADIAL CANAL (water vascular system)

26. AMBULACRAL RIDGE
AMPULLAE (tops of tube feet)

28. DIGESTIVE GLAND
GONAD
OSSICLES