Where does filtration occur in the nephron?

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Study for the IMAT Biology Exam with focused multiple-choice questions. Use hints and explanations to enhance your preparation. Get ready for your exam success!

Multiple Choice

Where does filtration occur in the nephron?

Explanation:
Filtration happens at the renal corpuscle, specifically in the glomerulus inside Bowman's capsule. Blood pressure pushes water and small solutes through the filtration barrier—composed of the glomerular endothelium, the basement membrane, and podocyte slit diaphragms—into Bowman's space, forming the filtrate. Larger proteins and cells stay behind in the blood. The filtrate then enters the proximal tubule for reabsorption and secretion; the Loop of Henle, distal tubule, and collecting duct handle reabsorption, secretion, and final urine concentration rather than filtration.

Filtration happens at the renal corpuscle, specifically in the glomerulus inside Bowman's capsule. Blood pressure pushes water and small solutes through the filtration barrier—composed of the glomerular endothelium, the basement membrane, and podocyte slit diaphragms—into Bowman's space, forming the filtrate. Larger proteins and cells stay behind in the blood. The filtrate then enters the proximal tubule for reabsorption and secretion; the Loop of Henle, distal tubule, and collecting duct handle reabsorption, secretion, and final urine concentration rather than filtration.

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