exotics GIT

Question 1

do fish have a long or short oesophagus

Answer 1

short

Question 2

4 forms of fish stomach

Answer 2

Y-shaped
U-shaped
absent
straight

Question 3

what separates fish stomach from intestines

Answer 3

pyloric sphincter

Question 4

what structure do some fish have that secretes digestive enzymes

Answer 4

pyloric caeca

Question 5

division of fish GIT

Answer 5

foregut, midgut, hindgut

Question 6

do herbivores have a longer intestine than carnivore species

Answer 6

yes (may have a gizzard)

Question 7

cloaca is found in which animals and what is it

Answer 7

fish, reptiles, birds
it is a cavity at the end of the digestive tract that releases both excretory and genital products

Question 8

4 reptilia

Answer 8

-rynchocephalia (tuatara)
-crocodilia (crocs, alligators)
-chelonia (tortoise, turtles)
-squamata (scaled eg- lizards and snakes)

Question 9

what diet do snakes have

Answer 9

carnivores

Question 10

why are snake teeth backwards

Answer 10

to aid swallowing

Question 11

name given to venomous snakes with hollow teeth

Answer 11

pleurodonts

Question 12

where are venom glands derived from

Answer 12

labial salivary glands

Question 13

what do snakes do instead of chewing their pray

Answer 13

mechanical and enzyme digestion from the stomach

Question 14

what helps snakes able to swallow larger pray

Answer 14

can disengage their jaw at the mandibular symphysis

Question 15

what shaped stomachs do snakes have

Answer 15

J shaped

Question 16

what allows the snake oesophagus to stretch

Answer 16

it has folds in it

Question 17

splenopancrease

Answer 17

somtimes in snakes the spleen is fused to the pancreas

Question 18

what are the 2 parts of crocodila stomach

Answer 18

glandular and muscular

Question 19

pleurodont

Answer 19

attached to periosteal side of mandible, no sockets)

Question 20

acrodont

Answer 20

attached to biting edge of jaw, no sockets, not usually replaced

Question 21

what shaped stomachs do lizards have

Answer 21

J shaped

Question 22

do lizards have a caecum

Answer 22

they might do

Question 23

what is the appearance of the lizards colon

Answer 23

colon is sacculated

Question 24

what do testudines (turtles etc) have instead of teeth

Answer 24

keratinised beak

Question 25

is testudines caecum large or small

Answer 25

small

Question 26

do testudines do handgun fermentation

Answer 26

yes

Question 27

why must herbivores be starved prior to hibernation

Answer 27

semi-digested vegetation can ferment and lead to sepsis

Question 28

what protects bird beaks

Answer 28

their keratinised epithelium

Question 29

Herbst corpuscles

Answer 29

vibration sensitive mechanoreceptors

Question 30

do all bird species have a crop

Answer 30

no eg owls and geese

Question 31

how is crop milk made

Answer 31

sloughing of epithelial cells

Question 32

proventriculus

Answer 32

glandular, enzymatic digestion

Question 33

gizzard

Answer 33

muscular stomach with a need for grit

Question 34

bird small intestines

Answer 34

duodenum, jejunum, ileum

Question 35

how many defections for caecal contents to be voided

Answer 35

10 (pale and frothy)

Question 36

3 main rodentia variations

Answer 36

• Myomorpha (mouse like)
• Sciuromorpha (squirrel like)
• Caviomorpha (cavy like)

Question 37

myomorpha teeth

Answer 37

brachydont, anelodont, radicular (short crown, not continuously growing, closed root)

Question 38

suiuromopha teeth

Answer 38

brachydont, anelodont, radicular (short crown, not continuously growing, closed root)

Question 39

caviomorpha teeth

Answer 39

hypsodont, elodont, aradicular (tall crown, continuously growing, open root)