Kidneys Their definition and functions

Kidneys are organs that are placed in our back close to the middle portion just below the rib cage towards the left and right of our spinal chord. They look like that of the shape of the beans. Each kidney is of the size of our fist. They actually function as very sensitive filter for our body. Every day it removes about 2 quarters of waste harmful products and extra water from around 200 quarts of blood in the human being. These are removed from the body through urine.

The blood comes inside the kidneys through the arteries. Arteries are located inside the kidneys. The blood moves through the arteries and goes into tiny clusters of blood vessels. These clusters are called glomerulus. The word glomerulus is derived from the Greek word that means filter. The plural of this is glomeruli .Nearly you can find one million glomeruli or so called filters in each kidney. This glomerulus is connected to the starting of the tube that collects small fluids and is called the tubule. The blood is filtered in the glomerulus and whatever extra water and waste is present it goes through the tubule and turns into urine. Then the urine is removed from the kidney into the bladder with the help of large tubes called ureters.

The tiny vessels of the blood gets wind up with the tubes that collect fluids inside the nephron. Nearly 1 million nephrons are present in each kidney of a human body.

Nephron is basically each unit of glomerulus and tubule. Nearly 1 million nephrons are present in each kidney. Nephros that are healthy have a glomerular membrane. This glomerular membrane divides the vessels of the blood from the tubule and helps the harmful waste products and the excess water to move through the tubule. However, it keeps the blood cells and the protein intact in the blood fluid.

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