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.
In Depth: Kidney. The kidneys are two bean-shaped organs that extract waste from blood, balance body fluids, form urine, and aid in other important functions of the body. They reside against the back muscles in the upper abdominal cavity. They sit opposite each other on either side of the spine.idney. The kidneys are important organs with many functions in the body, including producing hormones, absorbing minerals, and filtering blood and producing urine. While they are important and kidney failure can be fatal, a human only needs one k...