Lecture 10 -- GI system

Place label the structure of the tongue.

What type of epithelium lines the papilla?

Keratinised stratified squamous

What type of muscle can be appreciated in tongue?

Skeletal muscle

What type of gland can be identified in the tongue?

Salivary gland

Describe the structure of parotid gland

What type of connective tissue can be appreciated in parotid gland?

Fibrous connective tissue

What type of epithelium is present in oesophagus?

Stratified squamous epithelium

What are these structure?

Mucous glands

What type of muscle appears in the oesophagus?

Depends on species

• Dogs: Skeletal muscle is replaced by smooth muscle at the junction with the stomach

• Pigs: Skeletal muscle is replaced by smooth muscle as it pass through the diaphragm

• Horses + Cats: Only distal third of oesophagus is smooth muscle

Describe histological structure of stomach.

Histological structure of abomasum

Describe the histological structure of rumen and reticulum

What type of the epithelium in reticulum?

Keratinised stratified squamous

What type of epithelium can be found in omasum?

Keratinised stratified squamous

What's the difference between the stomach and duodenum histologically?

Mucosa become thicker and villi are formed in duodenum

Describe the layers of duodenum. What is the gland found in the duodenum?

Describe the layers of ileum

What is the special structure in ileum?

Peyer’s patches (Lymphoid associated tissue)

Describe the layers in colon

What type of cells are more prominent in large intestine than in small intestine?

Goblet cells