7. GIT - exotics Flashcards
is the oesphagus of the fish short or long
short
name the 4 forms of fish stomachs
- Y-shaped e.g eel
- U-shaped e.g trout
- absent e.g blenny
- straight e.g mullet
what does the pyloric sphincter sperate in fish
stomach from intestines
pyloric caeca present in some species of fish, what is it thought to do?
secrete digestive enzymes
what type of fish species have a longer intestine than carnivorous species, they may also have a gizzard
herbivorous
what does a swimbladder do?
gas-filled organ found in some species , contributes to buoyancy, can also communicate with GIT
what classification are snakes?
carnviores
why are snake teeth backwards facing?
aids swallowing
if snakes are venomous what sort of teeth do they have?
pleurodonts, specially adapted hollow/grooved teeth
snakes dont chew there prey so what happens?
mechanical and enzymatic digestion from the stomach
to swallow prey snakes ave to disengage there jaw at the what?
mandibular symphasis
how many parts does a crocodile stomach have and whats the difference?
2 parts
- one part glandular
- one part muscular
what shape stomach do lizards and snake have?
J shaped
