ls2digestion1

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Author:
Anonymous
ID:
10691
Filename:
ls2digestion1
Updated:
2010-03-15 19:40:28
Tags:
LS2
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Description:
Digestion for LS2
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  1. What are the layers of the digestive system, starting from the lumen?
    • 1. mucosa layer
    • 2. submucosa layer
    • 3. muscularis layer
    • 4. serosa layer
  2. mucosa layer
    single layer of epithelial cells
  3. submucosa layer
    blood vessels, lymph vessels, and nerves
  4. muscularis layer
    smooth muscle (peristalsis)
  5. serosa layer
    thick protective membrane
  6. What are the parts of the small intestines?
    • 1. Duodenum
    • 2. Jujenum
    • 3. Ileum
  7. What are the parts of the large intestines?
    • Caecum
    • Ascending colon
    • Transverse colon
    • Descending colon
    • Sigmoid colon
    • Rectum
  8. saliva
    • Salivary amylase
    • Moistens food to facilitate swallowing
    • Lysozymes
    • Dissolves food to enhance taste buds
    • Aids in speech
    • Neutralizes acid
  9. folds of the stomach
    rugae
  10. gastric pits
    • Found in the mucosa layer
    • Consists of mucosa cells, chief cells, and parietal cells
  11. mucosa cells
    mucus and bicarbonate
  12. chief cells
    pepsinogen
  13. parietal cells
    hydrochloric cells and intrinsic factor

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