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

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Presentation on theme: "STARFISH DISSECTION http://www.emerchandise.com/images/p/SBS/pdPASBS0005.jpg."— Presentation transcript:

1 STARFISH DISSECTION

2 Kidspiration by Riedell

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

4 Starfish (sea stars) Come in a variety of colors

5 . . . and sizes

6 Not all starfish have 5 arms

7 SYMMETRY ADULTS- Radial LARVA- Bilateral

8 PENTARADIAL (5 armed starfish)

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

10 ORAL VIEW

11

12 SPINES PEDICELLARIA SKIN GILLS Image by Riedell

13 SPINY SKIN SPINES for protection connect to
SPINES for protection connect to ENDOSKELETON inside underneath skin

14 OSSICLES Calcium carbonate plates
form endoskeleton inside

15 SPINES PEDICELLARIA SKIN GILLS Image by Riedell

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

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

18 Skin gills between spines
EXCHANGE GASES and EXCRETE NITROGEN WASTE

19 TUBE FEET surfaces Can exchange gases and excrete nitrogen waste
Can exchange gases and excrete nitrogen waste

20 EYESPOTS Sense light/dark

21 Madreporite Opening to water vascular system

22

23 WATER VASCULAR SYSTEM BIODIDAC

24

25 ORAL VIEW MOUTH

26

27 AMBULACRAL GROOVE TUBE FEET sit in GROOVE

28 TUBE FEET Used for feeding & locomotion

29 TUBE FEET Used for feeding & locomotion
Can exchange gases and excrete nitrogen waste

30 CUT TRIVIUM

31 DIGESTIVE GLAND Makes BILE ABSORBS NUTRIENTS

32

33 2 part STOMACH

34 DIGESTIVE SYSTEM ANUS DIGESTIVE DIGESTIVE GLANDS GLANDS MOUTH
Image by Riedell

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

36 EUCOELOM OPEN CIRCULATION

37 ENDOSKELETON made of OSSICLES

38 OSSICLES Calcium carbonate plates
form endoskeleton inside

39

40 WATER VASCULAR SYSTEM BIODIDAC

41

42 GONADS

43 AMBULACRAL RIDGE covered by OSSICLES contains RADIAL NERVE (nervous)
AMBULACRAL RIDGE covered by OSSICLES contains RADIAL NERVE (nervous) and RADIAL CANAL (water vascular system)

44 AMBULACRAL RIDGE AMPULLAE (tops of tube feet)

45 NERVOUS SYSTEM follows WVS
Image by Riedell NERVE RING encircles mouth RADIAL NERVES run inside AMBULACRAL RIDGE in each arm

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

47

48 DIGESTIVE GLAND GONAD OSSICLES

49 MOLLUSKS (some ANNELIDS)
Have a TROCHOPHORE LARVA

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

51 Ability to self amputate AUTOTOMY
ASEXUAL REPRODUCTION Ability to self amputate AUTOTOMY Ability to regrow lost parts REGENERATION


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