Question

Urea is one of our metabolic wastes and it’s small enough to get pushed under pressure through the glomerulus and get filtered and then excreted in the urine. Describe where and how urea gets into our blood in the first place (before getting into the kidneys).

Answer 1

Answer:

Whenever one consumes proteins, after using the amino acids in the body for protein synthesis, the waste product that is produced is urea. urea is soluble in water. it is how nitrogen is excreted by the body. the body is unable to store excess proteins end products enter the blood stream. excess amino acids are converted in the liver to other products by the process of deamination. the nirogen in the amino acid becomes converted to ammonia, and this is further converted by the liver into urea, which is less toxic than ammonia to the body. the kidneys will then filter out the circulaion, send it to the bladder along with water and excrete it in the form of urine. One important organ in the body to help maintain homeostasis is the liver. It assists many of the body systems, including the excretory system. It does this by removing nitrogen from excess amino acids which cannot be stored and forming urea--a nitrogenous waste product. Urea is then added to the circulating blood and is transported to the kidneys to be excreted. Mammals have a pair of well-developed kidneys which have the purpose of controlling water balance in the body. This is an adaptation that allows mammals to exist in many different habitats on Earth with different climates. Kidneys also filter nitrogenous wastes in the bloodstream. These wastes, known as urea, are then combined with water and are excreted as urine. The blood that enters those kidneys contains wastes and when it leaves, it is purified and can then circulate through the body again. Nephrons are the functional units of the kidneys. They are microscopic filters that remove wastes from the blood and return useful substances.