1. The document describes the structure and function of the nephron, the basic structural and functional unit of the kidney. It details the two main parts of each nephron - the renal corpuscle and renal tubule. 2. The renal corpuscle includes the glomerulus, a capillary network, and Bowman's capsule, which encloses the glomerulus. The renal tubule consists of the proximal convoluted tubule, loop of Henle, and distal convoluted tubule. 3. Urine is formed through glomerular filtration, tubular reabsorption, and tubular secretion as fluid passes through the nephron. Most reabsorption occurs in the proximal convol