Which renal structure performs blood filtration?

Which renal structure performs blood filtration?

• A. Medulla
• B. Cortex
• C. Renal Pelvis
• D. Calyces

Answer: (B)

Blood filtration happens in the renal cortex, where the glomeruli are located. Each nephron begins with a glomerulus inside Bowman's capsule in the cortex; here blood is pushed across the filtration barrier to form the filtrate that becomes urine. The cortex also contains the proximal and distal tubules where much of reabsorption and secretion occur after filtration. The medulla houses the loops of Henle and collecting ducts, which mainly concentrate urine rather than filter blood. The renal pelvis and calyces are part of the drainage system that collects urine after processing. So, the cortex is the site of filtration.

Blood filtration happens in the renal cortex, where the glomeruli are located. Each nephron begins with a glomerulus inside Bowman's capsule in the cortex; here blood is pushed across the filtration barrier to form the filtrate that becomes urine. The cortex also contains the proximal and distal tubules where much of reabsorption and secretion occur after filtration. The medulla houses the loops of Henle and collecting ducts, which mainly concentrate urine rather than filter blood. The renal pelvis and calyces are part of the drainage system that collects urine after processing. So, the cortex is the site of filtration.