Wednesday, November 21, 2012

Anatomy- Liver/Gallbladder

Liver
- Located in upper abdominal (beneath diaphragm)
- Second largest organ in the human body (second only to skin)
- Heaviest gland of the body (3lbs)
- Has a larger right lobe, smaller left lobe
- Only place in the body that has two sources of blood (hepatic artery/hepatic portal vein)
- Filters bacteria and toxins from the body
- Manufactures bile

- Made up of approximately 10,000 lobules 
- Contain kupffer cells which destroy worn out white/red blood cells, bacteria, and other foreign matters
- Common hepatic duct joins the cystic duct from the gallbladder to form the common bile duct


Contains:
- Hepatic artery: brings fresh blood from heart (oxygenated)
- Portal vein:
- Hepatic vein: purified blood leaves through here
- Hepatic bile duct:


Gallbladder
- 7-10cm long and hangs from anterior inferior margin of the liver
- Produces 800-1000 mL of bile/day 
- Bile contains: water, bile salts, cholesterol, lecithin, bile pigments, several ions
- The bile salts helps to break down lipids.
- Bilirubin is the principal bile pigment, which is secreted into the bile and broken down in the intestine

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