Exercise 38 Digestive System Anatomy. Functions of the Digestive System Ingest food Digest food Absorb nutrients Eliminate indigestible waste.

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Presentation transcript:

Exercise 38 Digestive System Anatomy

Functions of the Digestive System Ingest food Digest food Absorb nutrients Eliminate indigestible waste

Digestive anatomy overview

Organization of the Digestive organs Alimentary Canal  Mouth  Pharynx  Esophagus  Stomach  Small intestine  Large intestine  Anus Accessory organs  Teeth  Tongue  Salivary glands  Gall bladder  Liver  Pancreas

The Digestive Process  Ingestion  Propulsion  Mechanical Digestion  Chemical Digestion  Absorption  Defecation

This is your basic alimentary tract structure.

The oral cavity and pharynx

Say “ahhh”…

Salivary glands

The Stomach

Gastroesophageal junction Esophagus Stomach Stratified squamous epithelium Simple columnar epithelium

Gastric histology

The peritoneum

Daddy, what does “retroperitoneal” mean?

Location of mesentary: The lesser omentum

Location of mesentary: The greater omentum

Histology of the small intestine Adaptation for absorption

Duodenal mucosa Duodenal glands Villi Goblet cells Crypts of Lieberkuhn!

Brunner’s (duodenal) glands You only find us here, In the duodenum!

Crypts of Lieberkuhn! Paneth cells

Anatomy of the large intestine

The Colon Look at all those goblet cells!

Human dental formula: Baby teeth

Human dental formula: Permanent teeth

Anatomy of a Tooth

Pancreas: Acinar cells

The Liver

The End

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