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Alimentary system

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  • 1. Alimentary System
    Prepared by:
    Chelsea F. Veridiano
  • 2. Alimentary System
    The organ system devoted to the ingestion, digestion, and assimilation of food and the discharge of residual wastes and consisting of the alimentary canal and those glands (ENDOCRINE GLANDS) that secrete digestive enzymes and HORMONES.
  • 3. Alimentary System
    Stomach
    Duodenum
    Liver
    Pancreas
  • 4.
  • 5. Stomach
    SECRETED HORMONES:
  • Stomach
    GASTRIN
    • From G cells
    • 11. Secretion of Gastric acid by Parietal Cells
    NEUROPEPTIDE Y
    • Increased food intake
    • 12. Decreased physical activity
  • 13. Stomach
    GHRELIN
    • From P/D1 cells
    • 14. Stimulate appetite
    • 15. Secretion of growth hormone from anterior pituitary gland
    HISTAMINE
    • From ECL cells
    • 16. Stimulate Gastric Acid secretion
  • 17. Stomach
    SOMATOSTATIN
    • From D cells
    • 18. Suppress release of gastrin, CCK, secretin, motilin, VIP, GIP, enteroglucagon
    • 19. Lowers rate of gastric emptying
    • 20. Reduces smooth muscle contractions and blood flow within the intestine.
    ENDOTHELIN
    • From X cells
    • 21. Smooth muscle contraction of stomach
  • 22. Duodenum
    SECRETED HORMONES:
    • Secretin
    • 23. Cholecystokinin
  • Duodenum
    SECRETIN
    • From S cells
    • 24. Secretion of bicarbonate from liver, pancreas and duodenal Brunner’s gland
    • 25. Enhances effects of CCK
    • 26. Stops production of gastric juice
  • 27. Duodenum
    CHOLECYSTOKININ (CCK)
    • From I cells
    • 28. Release of digestive enzyme from pancreas
    • 29. Release bile from gallbladder
    • 30. Hunger suppressant
  • 31. Liver
    SECRETED HORMONES:
    • Insulin like growth factors
    • 32. Thrombopoietin
    • 33. Angiotensinogen and Angiotensin
  • Liver
    INSULIN LIKE GROWTH FACTOR (IGF)
    • From Hepatocytes
    • 34. Insulin like effects
    • 35. Regulate cell growth and development
    THROMBOPOIETIN
    • From Hepatocytes
    • 36. Stimulates megakaryocytes to produce platelets
  • 37. Liver
    ANGIOTENSINOGEN and ANGIOTENSIN
    • From Hepatocytes
    • 38. Vasoconstriction
    • 39. Release of aldosterone from adrenal cortex dipsogen
  • 40. Pancreas
    SECRETED HORMONES:
  • Pancreas
    GLUCAGON
    • From α islet cells
    • 44. Glycogenolysis and gluconeogenes in liver
    • 45. Increases blood glucose level
    PANCREATIC POLYPEPTIDE
    • From PP cells
    • 46. Self regulate the pancreas secretion activities and effect the hepatic glycogen levels.
  • 47. Pancreas
    SOMATOSTATIN
    • From δ islet cells
    • 48. Inhibit release of insulin
    • 49. Inhibit release of glucagon
    • 50. Suppress the exocrine secretory action of pancreas
  • 51. Pancreas
    INSULIN
    • From β islet cells
    • 52. Intake of glucose, glycogenesis and glycolysis in liver and muscle from blood intake of lipids and synthesis or triglycerides in adipocytes

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