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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”

slide6
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

slide9
SPINES

PEDICELLARIA

SKIN GILLS

Image by Riedell

pedicellariae sing pedicellaria
PEDICELLARIAE(sing. Pedicellaria)

Keep surface clear of organisms

slide11
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

slide13
TUBE FEET surfaces

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

Can exchange gases and excrete nitrogen waste

eyespots
EYESPOTS

Sense light/dark

slide15
ORAL VIEW

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

slide17
Madreporite

Opening to water vascular system

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

slide21
ORAL VIEW

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

ambulacral groove
AMBULACRAL GROOVE

TUBE FEET sit in GROOVE

slide24
TUBE FEET

Used for feeding & locomotion

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

Can exchange gases and excrete nitrogen waste

slide26
DIGESTIVE GLAND

Makes BILE

ABSORBS NUTRIENTS

digestive system
DIGESTIVE SYSTEM

ANUS

DIGESTIVE

GLANDS

DIGESTIVE

GLANDS

DIGESTIVE

GLANDS

MOUTH

slide30
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

slide32
http://wwwbio200.nsm.buffalo.edu/labs/tutor/Starfish/

AMBULACRAL RIDGE covered by OSSICLES

contains RADIAL NERVE (nervous)

RADIAL CANAL (water vascular system)

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

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)

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

slide43
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

slide48
trivium

bivium

slide49
anterior arm

central disc

arms

slide51
bivium

madreporite

stonecanal

trivium

slide52
madreporite

peristome

stone canal

slide53
radialcanal

circular canal

peristome

slide54
Arms

Oral view

Ambulacral

Grooves

Mouth

slide55
Spines

Tube

feet

slide57
madreporite

anterior

arm

slide58
bivium

central

disk

slide59
ambulacral

grooves

mouth

slide60
mouth

tube feet

peristome

slide61
pyloric stomach

intestine

anus

intestinal caecum

slide62
pyloric stomach

pyloric caecum

pyloric duct

slide63
Pyloric stomach

Pyloric caecum

slide64
Pyloric

stomach

slide65
Pyloric

caecae

slide67
Cardiac

stomach

slide70
circular canal

ampulla

radial canal

polian vesicle

slide71
ampulla

tube feet

radial canal

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