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Crayfish
Parts Review
Image from:
http://biog-101-104.bio.cornell.edu/BioG101_104/tutorials/animals/crayfish.html
Walking legs
#6 = _____________________
antennae
a = _____________________
A = _____________
telson
uropods
B= ______________
B
A
Image from:
http://www.spc.cc.tx.us/biology/jmckinney/Studyimages/crayfish/crayfishdissectlist.html
Image from:
http://www.aa.psu.edu/div/mns/biology/crayfish/crayfishtable.htm
This structure is part of the crayfish’s
nervous system.
____________
These
structures
are the
__________
gills
These organs are part of the
________________
respiratory
system
Image from:
http://faculty.clintoncc.suny.edu/faculty/Michael.Gregory/files/Bio%20102/Bio%20102%20Laboratory/
Protostomes/protostomes.htm
Image from: http://biog-101-104.bio.cornell.edu/BioG101_104/tutorials/animals/crayfish.html
Compound eye
#8 = _____________________
rostrum
#9 = _____________________
#1 = ?
Digestive
glands
#1
#2
#2 = ?
heart
Image from:
http://www.aa.psu.edu/div/mns/biology/crayfish/crayfishtable.htm
Image from: http://biog-101-104.bio.cornell.edu/BioG101_104/tutorials/animals/crayfish.html
swimmerets
#2 = _____________________
male
This crayfish is a________
male
female
This crayfish is a
______________
female
female
male
How can you tell?
First pairs of swimmerets don’t form V
and bend up towards thorax to carry
sperm
Image from: http://biog-101-104.bio.cornell.edu/BioG101_104/tutorials/animals/crayfish.html
Image from: http://biog-101-104.bio.cornell.edu/BioG101_104/tutorials/animals/crayfish.html
#4 = _____________________
intestine
#3 = _____________________
Abdominal muscles
Image from: http://biog-101-104.bio.cornell.edu/BioG101_104/tutorials/animals/crayfish.html
#4 marks the region of the body called
cephalothorax
the _____________________
The part of the exoskeleton that covers
carapace
this area is the ________________
Image from: http://biog-101-104.bio.cornell.edu/BioG101_104/tutorials/animals/crayfish.html
These structures like antenna, antennules,
walking legs, maxillae, maxillipeds, etc. are
appendages
called _____________________
intestine
#1
heart
#2
Abdominal muscle
stomach
#3
Image from: http://biog-101-104.bio.cornell.edu/BioG101_104/tutorials/animals/crayfish.html
abdomen
#3 = _____________________
cheliped (key-luh-ped)
#7 = _____________________
Image from: http://biog-101-104.bio.cornell.edu/BioG101_104/tutorials/animals/crayfish.html
#2 =
___________
gills
The function of this organ is to
________________
remove oxygen from water
Image from: http://biog-101-104.bio.cornell.edu/BioG101_104/tutorials/animals/crayfish.html
#2 = ?
Green glands
Their function is to ________________
Remove nitrogen waste & excess water
(osmoregulation)
This red appendage
is the
cheliped
_______________
It is used for
___________________________
capturing food & defense
Image from: http://biog-101-104.bio.cornell.edu/BioG101_104/tutorials/animals/crayfish.html
This crayfish is a
male
______________
female
male
How can you tell?
First pairs of swimmerets form V
and bend up towards thorax to carry
sperm
The arrow is pointing at the
___________________
Cerebral ganglia
It is part of the __________________
nervous
system
#23 =
___________
antenna
#24 = __________________
antennules
Which of these can sense equilibrium?
#24 - antennules
#5 =
___________
Cardiac
stomach
#6 = ____________________
Pyloric stomach
These openings
that allow blood back
into the heart are called
____________________
Ostia (sing. ostium)
Watch a crayfish
heart movie
Image from:
Ostia movie:
http://www.quia.com/jg/265982list.html
http://www.gsu.edu/~bioasx/heartbeat.html
Image from: http://biog-101-104.bio.cornell.edu/BioG101_104/tutorials/animals/crayfish.html
# =4
maxillipeds
___________
Their function is
for touch, taste, &
_______________________________
to manipulate food
These structures
colored pink are
the _____________
antennules
They can sense
______________________
touch, taste, &
equilibrium
Match the body part with its function
antennules
Sense touch, taste, & equilibrium __________________
mandible
Chew food _____________________
Digestive gland
Make digestive enzymes __________________________
swimmerets
Transfer sperm/carry young _______________________
Gastric mill
Teeth in stomach to grind food ______________________
Match the body part with its function
chelipeds
Capture food and defense __________________
Maxilla, maxilliped
Manipulate food in crayfish _____________________
Maxilla, swimmerets, walking legs
create water currents __________________________
rostrum
Cover and protect eyes/brain _______________________
carapace
Cover and protect gills ______________________
Match the body part with its function
Feelers that sense touch and taste
but NOT Equilibrium
__________________
antennae
Green glands
Excrete nitrogen waste _____________________
Connect to exoskeleton
Adductor muscles
and move mouthparts __________________________
Pump hemolymph
heart
_______________________
ostia
Openings to let blood back into heart ______________________
Match the body part with its function
arteries
Carry blood away from the heart __________________
gills
Exchange gases _____________________
Cerebral ganglia
Acts as “brain” __________________________
Make sperm _______________________
testes
Compound eye
vision ______________________