Starfish dissection
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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

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Starfish dissection

STARFISH DISSECTION

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


Starfish dissection

Kidspiration by Riedell


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”


Starfish dissection

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


Starfish dissection

SPINES

PEDICELLARIA

SKIN GILLS

Image by Riedell


Pedicellariae sing pedicellaria

PEDICELLARIAE(sing. Pedicellaria)

Keep surface clear of organisms


Starfish dissection

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


Starfish dissection

TUBE FEET surfaces

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

Can exchange gases and excrete nitrogen waste


Eyespots

EYESPOTS

Sense light/dark


Starfish dissection

ORAL VIEW

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


Starfish dissection

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


Starfish dissection

Madreporite

Opening to water vascular system

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


Water vascular system

WATER VASCULAR SYSTEM

BIODIDAC


Starfish dissection

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


Starfish dissection

ORAL VIEW

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


Ambulacral groove

AMBULACRAL GROOVE

TUBE FEET sit in GROOVE


Starfish dissection

TUBE FEET

Used for feeding & locomotion

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

Can exchange gases and excrete nitrogen waste


Cut trivium

CUT TRIVIUM


Starfish dissection

DIGESTIVE GLAND

Makes BILE

ABSORBS NUTRIENTS


Starfish dissection

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


2 part stomach

2 part STOMACH


Digestive system

DIGESTIVE SYSTEM

ANUS

DIGESTIVE

GLANDS

DIGESTIVE

GLANDS

DIGESTIVE

GLANDS

MOUTH


Starfish dissection

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


Starfish dissection

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


Starfish dissection

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

AMBULACRAL RIDGE covered by OSSICLES

contains RADIAL NERVE (nervous)

RADIAL CANAL (water vascular system)


Water vascular system1

WATER VASCULAR SYSTEM

BIODIDAC


Ambulacral ridge

AMBULACRAL RIDGE

AMPULLAE (tops of tube feet)


Ossicles calcium carbonate plates1

OSSICLESCalcium carbonate plates

form endoskeleton inside

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


Gonads

GONADS


Starfish dissection

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


Nervous system

NERVOUS SYSTEM

NERVE RING encircles mouth

RADIAL NERVES run inside

AMBULACRAL RIDGE in each arm


Separate sexes

SEPARATE SEXES

GONADS-reproductive organs

Starfish have bothSEXUAL ASEXUAL (Regeneration)


Starfish dissection

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


Digestive gland

DIGESTIVEGLAND

GONAD

OSSICLES


Mollusks some annelids

MOLLUSKS (some ANNELIDS)

Have a

TROCHOPHORE LARVA

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


Starfish dissection

SEXUAL REPRODUCTION

FERTILIZATION

EXTERNAL

INDIRECT

DEVELOPMENT

LARVA

BIPINNARIA

Has BILATERAL SYMMETRYand wings to swim


Asexual reproduction

ASEXUAL REPRODUCTION

Ability to self amputate

AUTOTOMY

Ability to regrow lost parts

REGENERATION


Starfish1

Starfish

dissection

By: Carol Parker

Thanks to: Denise Roper and Lynn Fink


Dried specimens

Dried Specimens


Common starfish class asteroidea

Common StarfishClass Asteroidea

Aboral

view


Starfish dissection

trivium

bivium


Starfish dissection

anterior arm

central disc

arms


Starfish dissection

Madreporite


Starfish dissection

bivium

madreporite

stonecanal

trivium


Starfish dissection

madreporite

peristome

stone canal


Starfish dissection

radialcanal

circular canal

peristome


Starfish dissection

Arms

Oral view

Ambulacral

Grooves

Mouth


Starfish dissection

Spines

Tube

feet


Preserved specimens

Preserved Specimens


Starfish dissection

madreporite

anterior

arm


Starfish dissection

bivium

central

disk


Starfish dissection

ambulacral

grooves

mouth


Starfish dissection

mouth

tube feet

peristome


Starfish dissection

pyloric stomach

intestine

anus

intestinal caecum


Starfish dissection

pyloric stomach

pyloric caecum

pyloric duct


Starfish dissection

Pyloric stomach

Pyloric caecum


Starfish dissection

Pyloric

stomach


Starfish dissection

Pyloric

caecae


Starfish dissection

Gonads


Starfish dissection

Cardiac

stomach


Starfish dissection

cardiac stomach

peristome


Starfish dissection

Cardiac stomach


Starfish dissection

circular canal

ampulla

radial canal

polian vesicle


Starfish dissection

ampulla

tube feet

radial canal


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