Certified Nephrology Nurse Certification (CNN) Practice Exam 2025 - Free Nephrology Nursing Practice Questions and Study Guide

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What structures comprise the renal corpuscle?

Proximal convoluted tubule and loop of Henle

Glomerulus and Bowman's capsule

The renal corpuscle is a fundamental structure within the nephron, the unit of kidney function. It is specifically composed of the glomerulus and Bowman's capsule. The glomerulus is a network of tiny blood vessels (capillaries) where filtration of blood occurs, allowing water, ions, and small molecules to pass into Bowman's capsule, while larger molecules and blood cells remain in the bloodstream. Bowman's capsule encases the glomerulus and collects the filtrate, which is then directed into the renal tubule for further processing.

This structure plays a crucial role in the kidney's ability to filter blood and form urine, thereby maintaining the body’s fluid and electrolyte balance. Understanding the components and function of the renal corpuscle is essential for grasping how the kidneys operate on a physiological level, as well as their role in various renal diseases and their treatments.

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Collecting duct and nephron loop

Distal convoluted tubule and peritubular capillaries

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