1. Starfish Parts

2. This white disc on the aboral surface is the
Madreporite
________________
Its function is _______________________
Let water into
water vascular system

3. A=?
ampulla A
Its function is to
Squeeze to control water
___________________________
entering/leaving tube feet

4. stomach
This organ is the _____________

5. LABEL THE PARTS of the Water Vascular system
#2
#1 =
__________
ring
canal
__________
#2 = #1 #3
Stone
____________
dfsdf
canal
#3 =
ampullae
________________

6. A Digestive glands
B gonads
C ossicles

7. This diagram represents the 3 structures you
learned about on the surface of a starfish.
The blue structures are spines _____________
protection
for _____________________.
The red structures are ____________
Skin gills
for Exchanging gases/removing nitrogen waste
____________________
The green structure is a _____________
pedicellaria
for _________________________
keeping the surface free of organisms

8. A mouth
B Ambulacral
groove with
tube feet

9. These are located
in the
ambulacral
groove
Tube feet
Their function is ?
Locomotion, suction cups can grab food,
pry open clam shells, surface can exchange
gases and nitrogen waste

10. This opening on
the oral surface
is the
mouth
_____________
This seastar is showing
aboral
you its ___________
surface.

11. This tube is the
______________
Stone canal
It has
Calcium
_______________
carbonate
_______________
in it to make it
hard.
madreporite
It connects the _______________________
ring canal
to the ___________________

12. A spines
B Tube feet
C ambulacral groove

13. The arrow is
pointing at the
Ambulacral
________________
ridge
___________
The part of the water vascular system
that is found inside this ridge is the
Radial canal
______________________
The part of the nervous system that is
Radial nerve
found inside is the _________________

14. These 3 arms
farthest from the
madreporite are
called the
_______________
trivium

15. This starfish
is showing you its
oral
_____________
surface.

16. A
Identify A
Ring canal

17. Tell the function of each part:
Opening for water
vascular system madreporite
_____________________
Absorb nutrients Digestive glands
_____________________
Connect madreporite
to ring canal Stone canal
______________________
Plates that fuse to form
skeleton ossicles
______________________
gonads
Make sperm or eggs _________________
Exchange gases and get
rid of nitrogen waste Skin gills
_________________

18. These structures
that lie under the
digestive glands
are the
gonads
________________
Their function is to
____________________
Make eggs or sperm
reproductive
Their body system is _______________

19. These are
located at the
tip of each arm
eyespots
Their function is
To sense light and dark
______________________

20. Tell the function of each part:
Keep skin free of
organisms pedicellariae
_____________________
Extruded out through
mouth during feeding Cardiac stomach
________________
Stomach that connects
Pyloric stomach
to digestive glands ______________________
Squeeze to move water
up and down in tube feet ampullae
_________________ spines

21. This white disc on
the aboral surface
is the
madreporite
________________
It belongs to the
Water vascular
____________________ system
Its function
________________ entering the WVS
Opening for water

22. This part of the
stomach
connects to
the mouth
cardiac

23. ID THE PARTS SHOWN A
B
E
C
D F
A = MADREPORITE
_________________ AMPULLAE
E = ___________________
STONE CANAL
B = _________________ TUBE FEET
F = ___________________
RING CANAL
C = _________________
RADIAL CANAL
D = _________________

24. The digestive glands connect to the
pyloric
__________________ stomach.
cardiac
The ___________________ stomach is
extruded out of the mouth during
feeding

25. This space around
the organs is the
________________
coelom
Type of body cavity
found in echinoderms
Acoelom Pseudocoelom Eucoelom
EUCOELOM

26. These 2 arms
closest to the
madreporite are
called the
_______________
bivium

27. Identify B
(seen as bubbles
along ambulacral
ridge) B
ampulla
Squeeze to move water
Its function is ____________________
up and down in tube feet

28. #1
#2
#3
#4
Stone canal
#1 = _______________
Ambulacral ridge
#2 = _______________
ampullae
#3 = _______________
Ring canal
#4 = _________________

29. Pyloric stomach
A= __________________________
Cardiac stomach
B=__________________________
Digestive glands
C= __________________________
D=__________________________
anus
mouth
E= __________________________

30. These greenish
brown structures
are the
Digestive glands
________________
Tell their functions
Make bile
____________________
Finish digestion
____________________
Absorb nutrients
____________________

31. These white
structures on the
surface are
spines
________________
They connect down below to the
skeleton
_____________ underneath.
Their function is
________________
protection

32. Echinoderm larva
with wings
bipinnaria
________________
Type of symmetry seen
in the larval form
bilateral
____________________
Type of symmetry seen in adult echinoderms
________________
radial