Nephrons (Leaving Cert Biology): Flashcards
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Number of nephrons in each kidney
Number of nephrons in each kidney
Over one million
Length of a single nephron
Length of a single nephron
Approximately 3 centimetres
Primary function of nephrons
Primary function of nephrons
Kidney's primary filtration and processing units
Cup-shaped structure surrounding the glomerulus
Cup-shaped structure surrounding the glomerulus
Bowman's capsule
Nephron region doing most reabsorption work
Nephron region doing most reabsorption work
Proximal convoluted tubule
What passes through the descending limb of the loop of Henle?
What passes through the descending limb of the loop of Henle?
Water
Loop of Henle ascending limb permits movement of
Loop of Henle ascending limb permits movement of
Salt (but prevents water)
Function of the collecting duct
Function of the collecting duct
Final adjustments to water and salt balance
The glomerulus
The glomerulus
Cluster of capillaries in Bowman's capsule
Two main processes of urine formation
Two main processes of urine formation
Filtration and reabsorption
Where filtration occurs in the nephron
Where filtration occurs in the nephron
Glomerulus within Bowman's capsule
Volume of glomerular filtrate produced daily
Volume of glomerular filtrate produced daily
180 litres
Percentage of glomerular filtrate reabsorbed
Percentage of glomerular filtrate reabsorbed
99%
Large molecules prevented from filtration
Large molecules prevented from filtration
Blood cells, platelets, antibodies, and proteins
Final urine volume produced per day
Final urine volume produced per day
Approximately 1.5 litres