APPLIED RADIOLOGICAL ANATOMY

Detailed explanation-1: -The liver produces several chemicals (enzymes) that change ammonia into a form called urea, which the body can remove in the urine.

Detailed explanation-2: -Urea is produced in the liver and is a metabolite (breakdown product) of amino acids.

Detailed explanation-3: -Bile is the excretory product produced in the liver, it helps in maintaining the chemical levels in the blood and removing the waste away with digestive wastes. These are eliminated from the body and thus help in excretion. It maintains the level of amino acids in the blood.

Detailed explanation-4: -The urea cycle or ornithine cycle converts excess ammonia into urea in the mitochondria of liver cells. The urea forms, then enters the blood stream, is filtered by the kidneys and is ultimately excreted in the urine.

Detailed explanation-5: -In the liver, mitochondrial and cytosolic enzymes work together to produce urea from ammonia in a process called theurea cycle (Fig. 5.6).