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Digestion II

Digestion II. Stomach. Eats other fish. Stomachs. Stomach. Marine fish. Esophogus. Intestine. Freshwater Omnivore. Stomachs. Esophagus. Intestine. Planktivore. Stomach. Gizzard-Like Stomach. Gizzard Shad. Mullet. Parts of the Stomach. Fundic Stomach Muscular for Grinding.

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Digestion II

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  1. Digestion II

  2. Stomach

  3. Eats other fish Stomachs Stomach Marine fish Esophogus Intestine Freshwater Omnivore

  4. Stomachs Esophagus Intestine Planktivore Stomach Gizzard-Like Stomach

  5. Gizzard Shad Mullet

  6. Parts of the Stomach Fundic Stomach Muscular for Grinding Cardiac Stomach Secretes

  7. Fundic

  8. Cardiac

  9. Hydrochloric Acid • decalcifies bones

  10. Hydrochloric Acid • decalcifies bones • breaks down connective tissue

  11. Hydrochloric Acid • decalcifies bones • breaks down connective tissue • hydrolyzes proteins

  12. Hydrochloric Acid • decalcifies bones • breaks down connective tissue • hydrolyzes proteins • kills disease organisms

  13. Pepsin • Enzyme • Made by stomach glands • Breaks down protein at low pH

  14. Implications?

  15. Intestine

  16. Large Intestine? NO!

  17. Variability in Intestine Design Sturgeon (Spiral Valve) Carp Catfish Trout

  18. Cecae Stomach Intestine

  19. Definitions • Planktivore: Eats plankton • Piscivore: Eats fish • Herbivore: Eats plants • Omnivore: Eats a little of everything • Detritivore: Eats bottom goo • Insectivore: Eats insects • Carnivore: Meat (insects and fish too…)

  20. IntestineLength • Piscivores: 1 x body length • Herbivores: 2x body length • Planktivores: 5-13x body • Omnivores: 2-4 x body • Detritivores: 10-15 x body

  21. Intestinal Secretions • Bicarbonate to neutralize the acid • Produces correct pH for other digestive enzymes that come from the…

  22. Pancreas

  23. Pancreas • Endocrine: Insulin for blood sugar control (Brockman bodies) • Exocrine: Digestive enzymes

  24. Endocrine Pancreas

  25. Pancreatic Islet: Insulin

  26. Exocrine Pancreas

  27. Intestine Zymogen Granules

  28. Piscivores

  29. ExocrinePancreas Trypsin: proteins Lipases: fats

  30. Adipose Tissue

  31. Herbivores

  32. ExocrinePancreas Trypsin: proteins Lipases: fats Amylases: starches

  33. Omnivores Detritivores

  34. ExocrinePancreas Trypsin: proteins Lipases: fats Amylases: starches

  35. Liver

  36. Gall Bladder Liver

  37. = Liver cells Liver cells arranged in plates = Bile ducts = Blood

  38. = Liver cells Liver cells arranged in tubes = Bile ducts = Blood

  39. The Liver Secretes Bile

  40. Fat Bile

  41. Bile Vein Inside Intestine

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