Liver
Vertebrate organ involved in metabolism / From Wikipedia, the free encyclopedia
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The liver is a major organ only found in vertebrates which performs many essential biological functions such as detoxification of the organism, and the synthesis of proteins and biochemicals necessary for digestion and growth.[2][3][4] In humans, it is located in the right upper quadrant of the abdomen, below the diaphragm. Its other metabolic roles include carbohydrate metabolism, the production of hormones and substances such as glucose and glycogen, and the decomposition of red blood cells.[4]
| Liver | |
|---|---|
 The human liver is located in the upper right abdomen | |
 Location of human liver (in red) shown on a male body | |
| Details | |
| Precursor | Foregut |
| System | Digestive system |
| Artery | Hepatic artery |
| Vein | Hepatic vein and hepatic portal vein |
| Nerve | Celiac ganglia and vagus nerve[1] |
| Identifiers | |
| Latin | Jecur, iecur |
| Greek | Hepar (ἧπαρ) root hepat- (ἡπατ-) |
| MeSH | D008099 |
| TA98 | A05.8.01.001 |
| TA2 | 3023 |
| FMA | 7197 |
| Anatomical terminology | |
The liver is an accessory digestive organ that produces bile, an alkaline fluid containing cholesterol and bile acids, which helps the breakdown of fat. The gallbladder, a small pouch that sits just under the liver, stores bile produced by the liver which is later moved to the small intestine to complete digestion.[5] The liver's highly specialized tissue, consisting mostly of hepatocytes, regulates a wide variety of high-volume biochemical reactions, including the synthesis and breakdown of small and complex molecules, many of which are necessary for normal vital functions.[6] Estimates regarding the organ's total number of functions vary, but is generally cited as being around 500.[7]
It is not known how to compensate for the absence of liver function in the long term, although liver dialysis techniques can be used in the short term. Artificial livers have not been developed to promote long-term replacement in the absence of the liver. As of 2018[update],[8] liver transplantation is the only option for complete liver failure.