Avian GI Tract

Question 1

do birds have a diaphragm?

Answer 1

no!

Question 2

name the 2 mesenteries in avian species

Answer 2

dorsal and ventral mesentaries

Question 3

what is the crop

Answer 3

an out pouching of the esophagus prior to entrance into the body cavity

Question 4

do all avian species have crops

Answer 4

no, ex. owls and penguins do not possess crops

Question 5

is the proventriculus on the right or left side of midline

Answer 5

left

Question 6

is the ventriculus glandular or non glandular

Answer 6

non glandular

Question 7

is the isthmus glandular or non glandular

Answer 7

non glandular

Question 8

is the proventriculus glandular or non glandular

Answer 8

glandular

Question 9

what is the thickened, solidified membrane in the gizzard called

Answer 9

cuticle of koilin

Question 10

what is the strong muscle of the gizzard called

Answer 10

aponeurosis

Question 11

describe the vitaline diverticulum

Answer 11

remnant of the yolk sac/ placenta located off the anti-mesenteric side of the jejunum

Question 12

what is the rectum also called in avian species*

Answer 12

the colorectum

Question 13

what is different about the cecum in avian species*

Answer 13

have paired ceca, each with own fold attaching to the illeum

Question 14

how many illeocecal folds are there in avian species*

Answer 14

2!

Question 15

what is the demarkation for the beginning of the illeum in avian species (for UCVM purposes)*

Answer 15

start of the illeocecal folds

Question 16

where do the bile ducts enter the small intestines*

Answer 16

at the distal end of the duodenum and start of the jejunum

Question 17

how many bile duct are there in avian species

Answer 17

one for each lobe of the liver and some for the pancreas will enter at the start of the end of the duodenum and start of the jejunum

Question 18

what is the cloaca

Answer 18

common opening/ space for the digestive tract and urogenital tract

Question 19

what is the function of the coprodium

Answer 19

stores feces