Silk counts to the strongest natural fabric in the world. Known for its softness, luster, beauty and luxurious look, silk fabric is one of the higher grade fabric providing comfort to the wearer in all types of weather. Keeping the body cool in summer and warm in winter, silk was discovered during 2640 B.C. in china.
In this way, your kidneys regulate the body's level of these substances. The right balance is necessary for life, but excess levels can be harmful. In the nephron (left), tiny blood vessels intertwine with urine-collecting tubes. Each kidney contains about 1 million nephrons. In addition to removing wastes, your kidneys release three important hormones: 1  Erythropoietin (eh-RITH-ro-POYeh-tin), or EPO, which stimulates the bones to make red blood cells. 2  Renin (REE-nin), which regulates blood pressure.
Along with the liver, the kidneys keep the bloodstream clean and the blood at the proper thickness and pressure. The kidneys' main function is as a homeostatic regulator. Your body has equilibrium levels for salt content, water content, core temperature, blood pressure and blood volume. Filtering out wastes to be excreted in the urine. 2  Regulating blood pressure via both urinary excretion of wastes and initiating the renin-angiotensen hormone regulatory system. 3  Regulating an acid-base balance via the bicarbonate system. 4  Stimulating red blood cell production via the release of the hormone erythropoietin.