Digestion, moving on

1
Digestion, moving on

• Karen Kraus
• BIOL 204
• November 14, 2006

2
With onions

• Four lobes divided into lobules
• Hepatocytes form bile
• Sinusoids filter blood
• Various functions
• Gall bladder stores and concentrates bile until
  it is released

3
Bile

• Water
• HCO3-
• Bile salts
• Cholesterol
• Bile pigments
• Lipids/phospholipids
• Lecithin
• Other electrolytes
• Emulsifies fats for lipase

4
Panacea

• Endocrine and exocrine functions
• Acinar cells are exocrine
• HCO3-
• Proteinases
• Amylase
• Exonucleases
• Lipase

5
Its big!
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colonoscopy

• Symbiotic bacterial action
• Water reabsorption
• Electrolyte reabsorption
• Feces formation

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The end

• Haustral contractions and mass movements
• Defecation reflex
• Distention
• Contraction of the rectal muscles
• Anal sphincters
• Levator ani

8
Layout

• Waste removal
• Fluid regulation
• Ion balance (including pH)
• Hormones
• Vitamin D
• Gluconeogenesis

9
beanie

• Retroperitoneal, right is inferior to left
• Three coverings
• Cortex and medulla areas
• Functional unit is the nephron

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nephron

• Glomerulus
• Bowmans capsule
• Proximal convoluted area
• Loop of Henle
• Distal convoluted area
• Collecting duct
• Cortical vs. juxtamedullary

11
Feed me!
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connections
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Holding pattern