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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.

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Starfish dissection

STARFISH DISSECTION

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



Symmetry
SYMMETRY

ADULTS- Radial

LARVA- Bilateral

http://www.uic.edu/classes/bios/bios100/labs/radial.jpg


Invertebrates no backbone
INVERTEBRATES(No backbone)

ALL INVERTEBRATES ARE PROTOSTOMES EXCEPT

ECHINODERMS

ONLY INVERTEBRATES that are DEUTEROSTOMES


Starfish
STARFISH

LATIN meaning

KINGDOM _____________

PHYLUM _____________________________

CLASS _______________________________

ANIMALIA

ECHINODERMATA “spiny skin”

ASTEROIDEA “star-like”


SPINES

PEDICELLARIA

SKIN GILLS

Image by Riedell


Spiny skin
SPINY SKIN

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

SPINES for protection connect to

ENDOSKELETON inside underneath skin


Ossicles calcium carbonate plates
OSSICLESCalcium carbonate plates

form endoskeleton inside

http://ebiomedia.com/prod/BOechinoderms.html


SPINES

PEDICELLARIA

SKIN GILLS

Image by Riedell


Pedicellariae sing pedicellaria
PEDICELLARIAE(sing. Pedicellaria)

Keep surface clear of organisms


SKIN GILLSHollow skin tubes that project from skin for increased surface area

connect to coelom inside

Image by Riedell


Skin gills between spines
Skin gills between spines

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

EXCHANGE GASES and

EXCRETE NITROGEN WASTE


TUBE FEET surfaces

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

Can exchange gases and excrete nitrogen waste


Eyespots
EYESPOTS

Sense light/dark


ORAL VIEW

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



Madreporite

Opening to water vascular system

http://ebiomedia.com/gall/skin/skin1.html




ORAL VIEW

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


Ambulacral groove
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



DIGESTIVE GLAND

Makes BILE

ABSORBS NUTRIENTS


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


2 part stomach
2 part STOMACHhttp://www.k-state.edu/organismic/echinoderms_and_protochordates.htm


Digestive system
DIGESTIVE SYSTEMhttp://www.k-state.edu/organismic/echinoderms_and_protochordates.htm

ANUS

DIGESTIVE

GLANDS

DIGESTIVE

GLANDS

DIGESTIVE

GLANDS

MOUTH


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


http://wwwbio200.nsm.buffalo.edu/labs/tutor/Starfish/http://www.k-state.edu/organismic/echinoderms_and_protochordates.htm

AMBULACRAL RIDGE covered by OSSICLES

contains RADIAL NERVE (nervous)

RADIAL CANAL (water vascular system)


Water vascular system1
WATER VASCULAR SYSTEMhttp://www.k-state.edu/organismic/echinoderms_and_protochordates.htm

BIODIDAC


Ambulacral ridge
AMBULACRAL RIDGEhttp://www.k-state.edu/organismic/echinoderms_and_protochordates.htm

AMPULLAE (tops of tube feet)


Ossicles calcium carbonate plates1
OSSICLEShttp://www.k-state.edu/organismic/echinoderms_and_protochordates.htmCalcium carbonate plates

form endoskeleton inside

http://ebiomedia.com/prod/BOechinoderms.html


Gonads
GONADShttp://www.k-state.edu/organismic/echinoderms_and_protochordates.htm


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


Nervous system
NERVOUS SYSTEMhttp://www.k-state.edu/organismic/echinoderms_and_protochordates.htm

NERVE RING encircles mouth

RADIAL NERVES run inside

AMBULACRAL RIDGE in each arm


Separate sexes
SEPARATE SEXEShttp://www.k-state.edu/organismic/echinoderms_and_protochordates.htm

GONADS-reproductive organs

Starfish have bothSEXUAL ASEXUAL (Regeneration)


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


Digestive gland
DIGESTIVEhttp://www.k-state.edu/organismic/echinoderms_and_protochordates.htmGLAND

GONAD

OSSICLES


Mollusks some annelids
MOLLUSKS http://www.k-state.edu/organismic/echinoderms_and_protochordates.htm(some ANNELIDS)

Have a

TROCHOPHORE LARVA

http://www.okc.cc.ok.us/biologylabs/Images/Evolimages/trochophore.JPG


SEXUAL REPRODUCTIONhttp://www.k-state.edu/organismic/echinoderms_and_protochordates.htm

FERTILIZATION

EXTERNAL

INDIRECT

DEVELOPMENT

LARVA

BIPINNARIA

Has BILATERAL SYMMETRYand wings to swim


Asexual reproduction
ASEXUAL REPRODUCTIONhttp://www.k-state.edu/organismic/echinoderms_and_protochordates.htm

Ability to self amputate

AUTOTOMY

Ability to regrow lost parts

REGENERATION


Starfish1

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

dissection

By: Carol Parker

Thanks to: Denise Roper and Lynn Fink


Dried specimens
Dried http://www.k-state.edu/organismic/echinoderms_and_protochordates.htmSpecimens


Common starfish class asteroidea
Common Starfishhttp://www.k-state.edu/organismic/echinoderms_and_protochordates.htmClass Asteroidea

Aboral

view


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

bivium


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

central disc

arms


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


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

madreporite

stonecanal

trivium


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

peristome

stone canal


radialhttp://www.k-state.edu/organismic/echinoderms_and_protochordates.htmcanal

circular canal

peristome


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

Oral view

Ambulacral

Grooves

Mouth


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

Tube

feet


Preserved specimens
Preserved Specimenshttp://www.k-state.edu/organismic/echinoderms_and_protochordates.htm


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

anterior

arm


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

central

disk


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

grooves

mouth


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

tube feet

peristome


pyloric stomachhttp://www.k-state.edu/organismic/echinoderms_and_protochordates.htm

intestine

anus

intestinal caecum


pyloric stomachhttp://www.k-state.edu/organismic/echinoderms_and_protochordates.htm

pyloric caecum

pyloric duct


Pyloric stomachhttp://www.k-state.edu/organismic/echinoderms_and_protochordates.htm

Pyloric caecum


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

stomach


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

caecae


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


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

stomach


cardiac stomachhttp://www.k-state.edu/organismic/echinoderms_and_protochordates.htm

peristome


Cardiac stomachhttp://www.k-state.edu/organismic/echinoderms_and_protochordates.htm


circular canalhttp://www.k-state.edu/organismic/echinoderms_and_protochordates.htm

ampulla

radial canal

polian vesicle


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

tube feet

radial canal


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