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

Kidspiration by Riedell

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

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

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

SPINES PEDICELLARIA SKIN GILLS Image by Riedell

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

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

SPINES PEDICELLARIA SKIN GILLS Image by Riedell

PEDICELLARIAE (sing. Pedicellaria) Keep surface clear of organisms

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

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

TUBE FEET surfaces Can exchange gases and excrete nitrogen waste http://wwwbio200.nsm.buffalo.edu/labs/tutor/Starfish Can exchange gases and excrete nitrogen waste

EYESPOTS Sense light/dark

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

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

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

WATER VASCULAR SYSTEM BIODIDAC

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

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

AMBULACRAL GROOVE TUBE FEET sit in GROOVE

TUBE FEET Used for feeding & locomotion http://wwwbio200.nsm.buffalo.edu/labs/tutor/Starfish Can exchange gases and excrete nitrogen waste

CUT TRIVIUM

DIGESTIVE GLAND Makes BILE ABSORBS NUTRIENTS

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

2 part STOMACH

DIGESTIVE SYSTEM ANUS DIGESTIVE DIGESTIVE DIGESTIVE GLANDS GLANDS MOUTH

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

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

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

WATER VASCULAR SYSTEM BIODIDAC

AMBULACRAL RIDGE AMPULLAE (tops of tube feet)

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

GONADS

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

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

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

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

DIGESTIVE GLAND GONAD OSSICLES

MOLLUSKS (some ANNELIDS) Have a TROCHOPHORE LARVA http://www.okc.cc.ok.us/biologylabs/Images/Evolimages/trochophore.JPG

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

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

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