Also called statute mile. a unit of distance on land in English-speaking countries equal to 5280 feet, or 1760 yards (1.609 kilometers).
Urine formation begins in the renal corpuscle, where blood passing through the glomerulus is filtered. Filtrates include water, ions, and other solutes, which are filtered out of the blood and into the capsular space to begin urine formation. Urine passes into the proximal convoluted tubule, then into the nephron loop.The nephron concentrates urine by the process of the countercurrent multiplication system.iltrates include water, ions, and other solutes, which are filtered out of the blood and into the capsular space to begin urine formation. Urine passes into the proximal convoluted tubule, then into the nephron loop. The nephron concentrates urine by the process of the countercurrent multiplication system.
1 The urogenital system arises from intermediate mesoderm which forms a urogenital ridge on either side of the aorta. 2  The urogenital ridge develops into three sets of tubular nephric structures (from head to tail): the pronephros, the mesonephros, and the metanephros. Descent of the testis is due to tethering of the testes to the anterior body wall by the gubernaculum. 2  With growth and elongation of the embryo coupled with shortening of the gubernaculum, the testes are pulled through the body wall, then the inguinal canal, and finally into the scrotum.