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15 Cards in this Set

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[Anthropoda: crustacea] symmetry
bilateral
ceolom
well develop coelom
germ layers and development
3
*protostome
Respiratory system and pigment
gills: for gas exchange

**respiratory pigment in plasma is hemocyanin (transport O2 and CO2)
Circulatory system
open

heart--> arteries---> tissue---> sinuses---> gills--->peridial sinus---> return to heart

**Sinuses for nutrient and gas exchange
Skeletal muscle
chintinous exoskeleton (w/ some calcium carbonate)

*limit growth; requires molting
Cephalization
yes
nervous system
**Extensive cephalization; double, ventral nerve cord ganglia along length of cord
excretory system
green gland

**filters nitrogenous waste from hemolymph and excretes at the base of the antanna
Sexual
dioecious
sex ogans in female and male
Male: pair of three-lobed testes; va deferens, modified swimmerets

Female: pair of ovaries and oviduct
locomotion
exoskeleton w/ joint appendages
**jointed legs; swimmeretss
skeletal
exoskeleton; pincers
Hexapod and Crustacean: evolve what year? are they diverse?
evolved: 530 maya
**most diverse phylum
Digested system
mouth--> esophagus---> cardiac stomach ---> gastril mill---> pyloric stomach---> intestine---> anus

**digestive gland secretes enzymes and store glygogen