GI Tract- Exotics

Question 1

What are the 5 different categories of fish?

Answer 1

Lampreys, Elasmobranchs, Ray-Finned Fish, Lobe-Finned fish, Lungfish

Question 2

4 Different types of oesophagus

Answer 2

Y-shaped, U-shaped, Straight and Absent

Question 3

Pyloric Sphincter

Answer 3

separates stomach from intestines

Question 4

Pyloric caeca

Answer 4

present in some species, thought to secrete digestive enzymes

Question 5

Snake adaptions for teeth and heart

Answer 5

Have backward teeth in order to aid swallowing and can move their heart so it doesn’t become compressed in the stomach

Question 6

GIT in snakes

Answer 6

simple and short, so they require a high quality diet, oesophagus folds to allow for stretch

Question 7

Intestine in snakes

Answer 7

contains small coils enclosed by a mesentery

Question 8

Stomachs in crocodilians

Answer 8

made up of 2 parts, 1 muscular the second is glandular

Question 9

Why must tortoises be starved before hibernation?

Answer 9

So the food in their body doesn’t ferment and give them sepsis

Question 10

Teeth in lizards

Answer 10

vary depending on diet either pleurodont or acrodont

Question 11

Testudines

Answer 11

have a keratinised beak instead of teeth, small caecum and undergo hindgut fermentation

Question 12

Herbst Corpuscles

Answer 12

vibration sensitive mechanoreceptors often found in waterfowl

Question 13

Crop

Answer 13

Muscular pouch located on the front of a birds neck, serves as a storage place for food

Question 14

Crop Milk

Answer 14

A secretion made from the lining of the crop (sloughed epithelial cells) that is regurgitated to young birds

Question 15

Proventriculus

Answer 15

glandular part of a birds stomach, may store food or commence digestion before travelling to the gizzard

Question 16

Why do snakes require a high quality diet?

Answer 16

They have a very short GIT

Question 17

What is a cloaca?

Answer 17

an opening for the digestive, reproductive and urinary tracts

Question 18

Where does the swim bladder sit?

Answer 18

Between the vertebral column and the stomach

Question 19

Proventriculus meaning?

Answer 19

Glandular stomach

Question 20

Ventriculus meaning?

Answer 20

Muscular stomach

Question 21

How often are caecal contents voided?

Answer 21

Once every 10 defecations

Question 22

Myomorpha (mouse-like)

Answer 22

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

Question 23

Sciuromorpha (squirrel-like)

Answer 23

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

Question 24

Caviomorpha

Answer 24

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

Question 25

Which animal does not have a gall bladder?

Answer 25

Rats

Question 26

How do lizards use their tongues to sense?

Answer 26

They stick it into the vomeronasal organ which is used for sense

Question 27

What is a gizzard?

Answer 27

Stomach found in birds, mechanically digests food

Question 28

What is the proventriculus?

Answer 28

Glandular stomach found in birds, enzymatic digestion- food can travel back and forth between the two stomachs