Lecture 13 Part 3 Flashcards
Large Intestine-
Lacks villi
Water absorption
Hindgut Fermenters have specialz. organs-large
cecum. (horses, rhinos, rodents, rabbits, etc.)
Hindgut Ferm.: Advg.: Solub. nutr. are absorb. in SI before the rest…
undergoes fermentation
Hindg. Ferm.: Advg.: Its quicker- can utelize more
easily digest. parts of plants, get rid of rest, eat some more
Hindg. Ferm.: Disadvg.: Toxins may not be
destroyed before absorbed
Hindg. Ferm.: Disadvg.: Does not utilize all the
nutrients in plants
Foregut vs. Hindgut: Body size affects
advantages
Hindgut fermenters: Small herbivr.(rabbits)= high metabl., needs…
to digest food rapidly to meet high metabl. demand
Foregut fermenters: Large herbivr.(cows)= low metabl., slower transit does not lag
behind low metabl. demand
High quality/ lots of foods= hindgut fermnt,- can uteliz…
best parts of plants/move on to more; no need to coax out every bit of nutr. from plants
Low quality/limited food= foregut fermnt.- need to coax out of every bit of
nutr. from plants, nothing else to eat
End of Canal: (In most verts) Cloaca receives materials from
intest./urogenital tract; terminal chamber of alimentary canal
Pancreas: Exocrine function: secretes
enzymes/buffer
(amylases/lipases)
Speclizn of Alimry Canal: Some diets require
longer dig. time
Can length. time spent in canal by
Spiral valve and Lengthened canal
