digestive system Flashcards
porifera
suspension feeders (specialized cells)
Cnidaria
tentacles, GVC
lining of gastrovascular cavity in cnidaria
gastrodermis
lining of GVC does what
secretes digestive proteases
platyhelminthes
GVC: mouth, pharynx, thee branched intestines
What does the Pharynx do
extends through mouth. secretes digestive enzymes.
annelida
complete digestive system (mouth and anus)
annelida (analogous to beginning of throat)
pharynx
annelida (connects mouth to other digestive organs)
esophagus
annelida (takes care of all that inorganic stuff in the dirt)
Calciferous glands
annelida (holds food)
crop
annelida (birds have this too)
gizzard
annelida (digestion and absorption)
intestine
mollusca
complete. specialized filtering
mollusca (entry)
cilia lining ctenidia draw water into mantle cavity through incurrent siphon
Mollusca (after entry of food)
labial palps direct food to mouth
mollusca (connects mouth to stomach)
esophagus
mollusca (food grinding area)
stomach
mollusca (absorption)
digestive glands
mollusca (waste leaves)
excurrent siphon
echinodermata
complete
cardiac stomach
can be everted, first stomach in echinoderms
pyloric stomach
second stomach more digestion
hepatic ceca
extends into each arm. analogous to kidneys
second half of echinoderm digestion
short intestine leads to rectal ceca to anus
hexapoda
complete
hexapoda (stomach and teeth analog)
crop, gizzard
what is the crop, gizzard part of in bugs?
foregut
hexapoda: analog to kidneys
digestive ceca
digestive ceca in
midgut
ileum, colon, rectum
hindgut
crustacea
complete
crustacea: stomach
two chambered stomach
anterior to crustacean stomach
cardiac chamber
contained in cardiac chamber
gastric mill
second chamber of crustacean stomach
pyloric
digestion and absorption glands analog in crustacea
digestive glands
