Histology of non-glandular stomach

Question 1

Why is keratinised epithelium needed in ruminant forestomachs?

Answer 1

Mechanical protection of epithelial cells from abrasive fibrous material
Resistance to microbial degradation to protect underlying tissues
Prolonged retention of fibrous materials in rumen

Question 2

Which part of the ruminant forestomach would you find this epithelium?

Answer 2

Rumen

Question 3

What epithelium would you find in the ruminant forestomachs??

Answer 3

keratinised stratified squamous mucosal epithelium
non-glandular mucosa

Question 4

What digestive products are absorbed in the rumen?

Answer 4

VFAs, ammonia

Question 5

Label this histology of the rumen

Answer 5

Question 6

In which section of the ruminant forestomach would you find this epithelium?

Answer 6

Reticulum

Question 7

What is hardware disease in ruminants?

Answer 7

Traumatic reticuloperitonitis - sharp objects are ingested and pierce the reticulum => inflammation of surrounding tissues including peritoneum

Question 8

Label this reticulum histology

Answer 8

Question 9

In which section of the ruminant forestomach would you find this epithelium?

Answer 9

Omasum

Question 10

Label this omasum histology

Answer 10