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Understanding the Anatomy and Functions of the Digestive System

Explore the intricate structure and functions of the digestive system, responsible for processing food. This overview covers the entire alimentary canal, including the mouth, pharynx, esophagus, stomach, small intestine, large intestine, and anus, along with the essential accessory organs like the liver, pancreas, and gall bladder. Learn about the key processes of ingestion, digestion, absorption, and elimination, as well as the histology of digestive organs and adaptations for nutrient uptake. This foundational knowledge is crucial for comprehending human physiology.

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Understanding the Anatomy and Functions of the Digestive System

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Presentation Transcript

  1. Exercise 38 Digestive System Anatomy

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

  3. Digestive anatomy overview

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

  5. The Digestive Process • Ingestion • Propulsion • Mechanical Digestion • Chemical Digestion • Absorption • Defecation

  6. This is your basic alimentary tract structure.

  7. The oral cavity and pharynx

  8. Say “ahhh”…

  9. Salivary glands

  10. The Stomach

  11. Gastroesophageal junction Stomach Esophagus Stratified squamous epithelium Simple columnar epithelium

  12. Gastric histology

  13. The peritoneum

  14. Daddy, what does “retroperitoneal” mean?

  15. Location of mesentary:The lesser omentum

  16. Location of mesentary:The greater omentum

  17. Histology of the small intestine Adaptation for absorption

  18. Duodenal mucosa Villi Goblet cells Crypts ofLieberkuhn! Duodenal glands

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

  20. Crypts of Lieberkuhn! Paneth cells

  21. Anatomy of the large intestine

  22. The Colon Look at all those goblet cells!

  23. Human dental formula:Baby teeth

  24. Human dental formula: Permanent teeth

  25. Anatomy of a Tooth

  26. Pancreas: Acinar cells

  27. The Liver

  28. TheEnd

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