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31 terms

Crayfish Anatomy

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mouth
aids in taking in food
antennule
an antenna-like appendage with receptors for touch, taste, and equilibrium
antennae
an appendage specialized for touch and taste
head
anterior end of cephalothorax
uropod
anterior flipper that propels it through the water
cheliped
claw used to capture food and to provide defense
cephalothorax
consists of a head and thorax
walking legs
enable the crayfish to walk slowly
compound
eye with many lenses
telson
flat triangular section at the tail, used in swimming
abdomen
one of the two section of the body of a crayfish
swimmerts
organs that create water currents and functions in reproduction
carapace
outer covering of the crayfish
rostrum
part of the carapace that projects forward between the eyes
thorax
posterior end of the cephalothorax
cirvical groove
where the head and thorax have fused
digestive gland
absorb mixture from the stomach
gills
organs specialized for the exchange of gases with water
brain
anterior end of the central nervous system
ganglia
bundle of nerve cells
ventral nerve cord
carries nerve impulses
ovary
egg reproducing organ
anus
external opening; end of digestive system
stomach
has chitinous teeth which grind food into a paste
aorta
large artery; dorsal
mouth
opening to the digestive system
oviduct
passageway for eggs
heart
pumps blood
green gland
removes chemical wastes from the blood
esophagus
tube between mouth and stomach
intestine
tube which carries waste