Count to 10 - Anaesthetic Primary Podcast EP44 – Renal Anatomy, Blood Flow & Measurement | Anaesthetic Primary Topic | Renal Physiology | CT10
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Oct 29, 2025 Dive into renal physiology with an engaging exploration of kidney anatomy and blood flow! Discover the intricacies of nephron structure, including renal corpuscle components and the functionality of various tubular segments. Learn about the fascinating juxtaglomerular apparatus and how renal blood flow (RBF) ties into glomerular filtration rate (GFR). Arnie also breaks down GFR measurement techniques and common pitfalls. Perfect for those keen to polish their understanding of renal concepts!
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Nephron Structure Drives Filtration
- The nephron is the kidney's functional unit comprising a renal corpuscle and a tubule.
- Podocytes, mesangial cells and capillary fenestrations control selective glomerular filtration.
Loop Depth Determines Nephron Role
- Nephrons are classified by loop-of-Henle depth: cortical, midcortical, juxtamedullary.
- Juxtamedullary nephrons have long loops and associated vasa recta essential for urine concentration.
Vasa Recta Enable Counter-Current Exchange
- The vasa recta run parallel to the loop of Henle with reverse flow relative to limbs.
- This arrangement supports the counter-current mechanism for concentrating or diluting urine.