The liver is the largest gland in humans , dark red color , and weighs about 2 kg in adults . Hearts can be regarded as a tool secretion and excretion . Why the liver can be considered as a tool secretion ? The liver produces bile . Therefore , the secretion of the liver as a tool . Liver is said to be a tool for biliary excretion issued containing waste materials derived from the red blood cells are damaged and destroyed in the spleen . In the liver , red blood cells are broken down into hemin and globin . Hemin is converted into bile dyes , namely bilirubin and biliverdin . The dye bile out with feces and urine , and will give color to the feces and urine yellow widened . In addition to functioning as an expense , the liver also has other functions that are useful to the body include:
- store sugar in the form of glycogen ,
- offering poison ,
- make vitamin A from provitamin A ,
- regulate blood sugar levels ,
- make fibrinogen and protombin ,
- dyes produce bile ,
- where the formation of urea .
Of some liver function , which is associated with excretion function is :
1 . Produce latex Bile
Bile resulting from the overhaul of red blood cells . The sap is collected in the gall bladder is then channeled into the intestine 12 fingers . Bile basically consists of two components, namely bile salts and bile dyes . Function of bile salts in the digestive process is to emulsify fat foods . While bile dyes do not work so it must be excreted . The dye bile excreted into the intestine 12 fingers , some became sterkobilin , which are substances that color the stool and some blood to be reabsorbed by the kidneys excreted through the urine thus making color called urobilin . Both of these substances result in the color of feces and urine brownish yellow .
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