Urinalysis shows that Marianne has blood in her urine, which isfound to be coming from damage to the nephron. The area of thenephron that must be malfunctioning is the ,collecting ductproximal tubuledistal tubuleloop of Henleglomerulus

The nephron is the microscopic structural and functional unit of the kidney. It is composed of a renal corpuscle and a renal tubule. The renal corpuscle consists of a tuft of capillaries called a glomerulus and an encompassing Bowman's capsule. The renal tubule extends from the capsule.The correct answer is glomerulus. Glomerular diseases damage the glomeruli, letting protein and sometimes red blood cells (blood) leak into the urine. Glomerular disease may be caused by an infection or a drug that is harmful to the kidneys. In other cases, it may be caused by a disease that affects the entire body, like diabetes or lupus. Many different diseases can cause swelling (inflammation) or scarring (sclerosis) of the glomerulus. Following can be the first sign of glomerular disease: Blood in the urine (hematuria): Glomerular disease can cause your glomeruli to leak blood into the urine. The urine may look pink or light brown from blood. Protein in the urine (proteinuria): Glomerular disease can cause the glomeruli to leak protein into your urine. The urine may be foamy because of the protein. Edema: Glomerular disease can cause fluid to build up in your body. The extra fluid can cause swelling in body parts like the hands, ankles, or around eyes.