Worm
Worms have this many aortic arches.
They use these for gas exchange
Gills
This is the largest structure in the body
Liver
Three body regions are
head thorax abdomen
The white of the eye is the
These animals this type of circulatory system
Open
This body plate protects the gills
Operculum
These store energy processes in the body
Fat bodies
These are used for defense and catching prey
Claws or Chelipeds
The liquid found in the front of the eye is the
Aqueous humor
This animal has both male and female reproductive parts
This organ fills with gases to maintain buoyancy
Swim Bladder
The urine, sperm and eggs exit here
Cloaca
These appendages are used for steering while swimming
Swimmerettes
Located at the back of the eye & receives signals from the brain
Optic nerve
This organ is used for grinding and breaking down ingested food.
Gizzard
This structure secretes bile to aid in digestion
Liver
This is where nutrients are absorbed
Small intestines
Crayfish have this type of eye
Compound
Reflective layer in the back of the eye
Tapetum
These tiny bristle like structures on the outside of the body to help the worm move through soil
Setea
The fin analogous to human arms
Pectoral Fin
This amphibian has this type of organ to move blood
3 chambered heart
Crayfish are filer feeders that shape their environment making them this
Ecosystem Engineers
This gel like fluid gives the eye its shape
Vitreous humor