1. STARFISH DISSECTION http://www.emerchandise.com/images/p/SBS/pdPASBS0005.jpg

2. Kidspiration by Riedell

3. SYMMETRY ADULTS- Radial LARVA- Bilateral http://www.uic.edu/classes/bios/bios100/labs/radial.jpg

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

5. SPINY SKIN SPINES for protection connect to ENDOSKELETON inside underneath skin http://wwwbio200.nsm.buffalo.edu/labs/tutor/Starfish

6. OSSICLES Calcium carbonate plates form endoskeleton inside http://ebiomedia.com/prod/BOechinoderms.html

7. SPINES PEDICELLARIA SKIN GILLS Image by Riedell

8. PEDICELLARIAE (sing. Pedicellaria) Keep surface clear of organisms

9. SKIN GILLS Hollow skin tubes that project from skin for increased surface area connect to coelom inside Image by Riedell

10. Skin gills between spines EXCHANGE GASES and EXCRETE NITROGEN WASTE http://wwwbio200.nsm.buffalo.edu/labs/tutor/Starfish

11. TUBE FEET surfaces http://wwwbio200.nsm.buffalo.edu/labs/tutor/Starfish

12. EYESPOTS Sense light/dark

13. ORAL VIEW http://wwwbio200.nsm.buffalo.edu/labs/tutor/Starfish

15. http://ebiomedia.com/gall/skin/skin1.html Opening to water vascular system Madreporite

17. WATER VASCULAR SYSTEM BIODIDAC

18. http://mbgnet.mobot.org/salt/animals/star.jpg

20. AMBULACRAL GROOVE TUBE FEET sit in GROOVE

21. TUBE FEET Used for feeding & locomotion

22. Dissection Steps 1.Begin cutting down the central part of ray 1.Identify Digestive Glands 2.Identify connection of digestive glands to the pyloric stomach 2.Investigate stomach 1.Find Pyloric and Cardiac Stomachs 2.Find where Pyloric Stomach connects to digestive glands and anus 3.Find stone canal and Madroporite 1.Examine Tube Feet, Gonads, Radial & Ring Cannals, Ampullae

23. Begin to cut down central part of ray

24. DIGESTIVE GLAND Makes BILE ABSORBS NUTRIENTS

25. http://www.k-state.edu/organismic/echinoderms_and_protochordates.htm

26. 2 part STOMACH

27. DIGESTIVE SYSTEM DIGESTIVE GLANDS DIGESTIVE GLANDS MOUTH ANUS

28. CARDIAC stomach connects to mouth (extruded during feeding) PYLORIC stomach connects to digestive glands and ANUS http://www.k-state.edu/organismic/echinoderms_and_protochordates.htm

29. http://wwwbio200.nsm.buffalo.edu/labs/tutor/Starfish/

30. AMBULACRAL RIDGE covered by OSSICLES contains RADIAL NERVE (nervous) RADIAL CANAL (water vascular system) http://wwwbio200.nsm.buffalo.edu/labs/tutor/Starfish/

31. AMBULACRAL RIDGE AMPULLAE (tops of tube feet)

32. OSSICLES Calcium carbonate plates form endoskeleton inside http://ebiomedia.com/prod/BOechinoderms.html

33. GONADS

34. http://www.k-state.edu/organismic/echinoderms_and_protochordates.htm

35. NERVOUS SYSTEM NERVE RING encircles mouth RADIAL NERVES run inside AMBULACRAL RIDGE in each arm

36. SEPARATE SEXES GONADS- reproductive organs Starfish have both SEXUAL ASEXUAL (Regeneration)

37. http://www.k-state.edu/organismic/echinoderms_and_protochordates.htm

38. DIGESTIVE GLAND GONAD OSSICLES

39. LARVA FERTILIZATION EXTERNAL INDIRECT Has BILATERAL SYMMETRY and wings to swim BIPINNARIA DEVELOPMENT SEXUAL REPRODUCTION