Digestive system + functions

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Created by
kiara

Subdecks (2)

Cards (21)

  • Digestive System Functions

    • Ingestion
    • Digestion, to ↑ SA n simplify macemicals
    • Absorption - particles/maks passing the cell membrane the body
    • Egestion, elimination
  • Pepsinogen

    Makes pepsin (enzyme) that helps digest proteins to polypeptides
  • Digestive System

    • Chemical
    • Mechanical
  • Digestive System Organs

    • Oral Cavity - Teeth, tongue
    • Salivary glands-produces salive that has amylase (breaks down starch)
    • Epiglottis - covers traches so food ayes down esophages
    • Pharynx
    • Larynx
    • Esophagus- nes peristaltic contractions that pushies bolus down to stemach
    • Espree spinter
    • Cadac Sphinter
    • Stomach-ruge (folds in stomach? SA), HCl (pH 1-2]) pepsin digests proteins, gastric juice, wals lined/protected by ment
    • Pyloric Sphincter
    • Small Intestine - Duodenum, Jejunum - where his combined w bile in pancreatic amylose, Contains more folds than dus, bracks down remaing proteins in carbs
    • Ileum - Lessons will, absorbs, pushers remaining undigested chyme nto LI
    • Large Intestine - Deocecal Sphincter, Cecum Appendix, Ascending Descending Colen - Absorbs worker, further breaks down material, Stoves frees until eliminated at anus
    • Rectum
    • Anus
  • Food inside lumen of dignative sig is considered
  • Denatures pratins
  • Most absorption takes place in the Large Intestine
  • Caca come out
  • Liver: produces bile (to help digest fat), produces bile salts to emulsify insoluble fats and make them smaller and sends bile into the gall bladder
    Gall bladder: stores bile between meals
    Pancreas: secretes pancreatic fluid into the duodenum, has chemicals that digests lipids, carbs and proteins. Also produces bicarbonate to neutralize acidity which increases enzymatic efficiency
    Villi: the walls of the small intestine are lined by folds that have finger like projections (villi). Villi are surrounded by microvilli that also increase surface area
  • The large intestine contains bacteria that ferment any carbohydrates left over from the small intestine.