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Nephron Structure
| Question | Answer |
|---|---|
| Glomerulus Description | A cluster of capillaries supplied by the afferent arteriole and drained by the efferent arteriole |
| Glomerulus ET | Fenestrated endothelium |
| Glomerulus Function | Forms part of the filtration membrane |
| Visceral layer of the glomerular capsule Description | Podocytes that branch into foot processes |
| Visceral layer of the glomerular capsule ET | Simple Squamous Epithelium |
| Visceral layer of the glomerular capsule Function | Forms the outside of the cuplike glomerular |
| Parietal layer of the glomerular capsule Description | Outer impermeable wall of the glomerular wall of the glomerular |
| Parietal layer of the glomerular capsule ET | Simple squamous epithelium |
| Parietal layer of the glomerular capsule Funciton | Forms the outside of the cuplike glomerular capsule. Plays no role in filtration |
| PCT Description | Highly coiled first section of the renal tubule |
| PCT ET | Simple Cuboidal |
| PCT Function | Primary site of tubular reabsorption of water and solutes. Some secretion also occurs |
| Descending limb of the nephron loop Description | First portion of the nephron loop |
| Descending limb of the nephron loop ET | Simple Cuboidal |
| Descending limb of the nephron loop Function | Tubular reabsoprtion and secretes of water solutes |
| Descending thin limb of the nephron loop Description | A continuation of the descending limb |
| Descending limb of the nephron loop ET | Simple squamous |
| Descending limb of the nephron loop Function | Very permeable to water. Water is reabsorbed, but no solutes are reabsorbed |
| Thick ascending limb of the nephron Description | In most nephrons, the ascending limb is thick |
| Thick ascending limb of the nephron ET | Cuboidal or low columnar |
| Thick ascending limb of the nephron Function | Not permeable to water. Water is reabsorbed, but no solutes are reabsorbed |
| DCT Description | Coiled distal portion of the tubule |
| DCT ET | Simple Cuboidal |
| DCT Function | Some reabsorption of water and solutes and secretion, which are regulated to meet the body's needs |
| Collecting duct Description | Receives filtrate from the DCT of multiple Nephrons |
| Collecting duct ET | Simple Cuboidal |
| Collecting duct Function | Some reabsorption and secretion to conserve body fluids, maintain blood pH, and regulate solute concentrations |