external anatomy
name of crayfish appendages that are most numerous
swimmerets
lumps of nerves on the ventral nerve cord
ganglia
jaw feet that 'swish' water and grab food
maxillipeds
structures enabling limb flexibility
joints;jointed appendages
toward the front of the organism
anterior
term for the defending 'claw' of a crayfish
cheliped
what type of circulatory system the crayfish has
open
term for the fanned out tail structure of the crayfish
uropods
structures enabling improved sensing ability
antennae/antennules
the top surface or back of the organism
dorsal
the gills are attached to these legs
walking legs
this gland regulates salt balance for the crayfish
green gland
term for the 1st crayfish body segment consisting of both head and chest
cephalothorax
structure enabling body protection
exoskeleton
the bottom or belly of the organism
ventral
name for the hard outer covering of the head & chest
carapace
these structures are attached to the walking legs
gills
term for the complex eye of the arthropod
compound eye
structures of the body enabling flexibility and body organization
segments
toward the side; away from the middle
lateral
term for the sharp, pointy structure on the head protecting the eyes and brain
rostrum
structure located running through the ventral side of the tail
intestine
term for the first mouth parts of the crayfish
mandible
structures allowing arthropods to take to the air
wings
below or beneath another structure
inferior