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Related Concept Videos

Renal Corpuscle01:20

Renal Corpuscle

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The glomerulus and Bowman's capsule are two essential components of the nephron, which is the functional unit of the kidney. These microscopic structures play a critical role in the process of blood filtration to produce urine.
Glomerulus: Structure and Function
The glomerulus is a tiny, intricate network of capillaries located at the beginning of the nephron. It's enveloped by the Bowman's capsule and receives its blood supply from an afferent arteriole, which divides into numerous...
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Kidney Structure01:45

Kidney Structure

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The kidneys are two large bean-shaped organs located in the upper abdomen. They filter the blood several times a day to remove toxins and rebalance water and electrolytes of the circulatory system via the renal veins. The kidneys receive blood directly from the heart via the renal arteries. These arteries enter the kidney at the hilum, the concave surface of the bean, where they branch and divide into smaller vessels and capillaries.
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Glomerular Filtration01:15

Glomerular Filtration

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The filtration membrane in the renal system is a highly specialized structure essential for filtering blood. It consists of glomerular capillaries and podocytes, forming a selective barrier that permits the passage of water and small solutes while restricting most plasma proteins and blood cells.
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Nephrons01:10

Nephrons

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The kidneys are intricate organs with millions of working units known as nephrons. Each nephron features two major structures: the renal corpuscle, which facilitates blood plasma filtration, and the renal tubule, which handles the glomerular filtrate. Blood supply is directly linked to the nephrons. The renal corpuscle consists of the glomerulus, a capillary network, and the Bowman's capsule, a double-walled epithelial structure that encases the glomerulus. The filtering of blood plasma...
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Renal Drug Excretion: Glomerular Filtration01:02

Renal Drug Excretion: Glomerular Filtration

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The kidney serves as the primary organ responsible for eliminating drugs and their metabolites from the body. This process, known as renal elimination, starts with glomerular filtration and results in urine formation. Each kidney houses millions of functional units called nephrons, where urine production occurs. A nephron has two main components: a renal corpuscle and a renal tubule.
Drugs gain access to the kidney via the renal artery, which progressively branches off into afferent arterioles....
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Filtration and Urine Formation01:32

Filtration and Urine Formation

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The function of the kidneys is to filter, reabsorb, secrete, and excrete. Every day the kidneys filter nearly 180 liters of blood, initially removing water and solutes but ultimately returning nearly all filtrates into circulation with the help of osmoregulatory hormones. This process removes wastes and toxins but is also crucial to maintain water and electrolyte levels. Most of these functions are performed by the tiny but numerous nephrons contained within the kidneys.
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Related Experiment Video

Updated: Apr 28, 2026

An Efficient Sieving Method to Isolate Intact Glomeruli from Adult Rat Kidney
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An Efficient Sieving Method to Isolate Intact Glomeruli from Adult Rat Kidney

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The glomerulus: the sphere of influence.

Martin R Pollak1, Susan E Quaggin2, Melanie P Hoenig3

  • 1Beth Israel Deaconess Medical Center, Boston, Massachusetts; mpollak@bidmc.harvard.edu.

Clinical Journal of the American Society of Nephrology : CJASN
|May 31, 2014
PubMed
Summary

The kidney's glomerulus filters plasma through specialized cells and membranes. This study explores the forces and components driving filtration and kidney disorders.

Keywords:
glomerular filtrationglomerulusrenal physiology

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Area of Science:

  • Nephrology
  • Renal Physiology
  • Cell Biology

Background:

  • The glomerulus is the kidney's primary filtration unit.
  • It comprises fenestrated endothelium, glomerular basement membrane, and podocytes with slit diaphragms.
  • This intricate structure enables continuous plasma filtration.

Purpose of the Study:

  • To examine the dynamic physical forces governing single nephron glomerular filtration.
  • To explore cellular and molecular components of the glomerular tuft.
  • To investigate their roles in the pathogenesis of glomerular disorders.

Main Methods:

  • Review of established physiological principles of glomerular filtration.
  • Analysis of current literature on glomerular cell biology and molecular composition.
  • Integration of data on physical forces and cellular/molecular contributions.

Main Results:

  • The glomerulus utilizes unique structural and cellular features for efficient filtration.
  • Physical forces play a critical role in regulating glomerular filtration rate.
  • Alterations in cellular and molecular components contribute significantly to kidney disease.

Conclusions:

  • Understanding glomerular structure and function is key to comprehending kidney physiology.
  • The interplay of physical forces and molecular components dictates glomerular health.
  • Further research into these elements offers insights into treating glomerular diseases.