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Urinary System

Human Bio 2014

TermDefinition
Urea Produced in the liver by a metabolic cycle that combines ammonia with carbon dioxide
Uric Acid An insoluble precipitate of nitrogenous waste causing goute
Filtration The kidney filters by water being squeezed out of the blood in the glomerulus, from the blood by the nephrons
Filtrate The fluid extracted after filtration, for example in the kidney the filtrate will eventually produce urine
Selective Reabsorption The selective uptake of solvent [water] solutes from tubule, such as glucose or salt
Excretion The giving off of nitrogen-containing waste products of metabolism. Passing wastes out of the body
Renal Artery The blood vessel bringing blood to the kidney
Renal Vein The blood vessel draining the kidney of blood
Ureter Tube leading from the kidney to the urinary bladder
Urinary Bladder Bag where urine is stored prior to elimination
Urethra A tube that releases urine from the body
Renal Cortex The outer portion of the vertebrate kidney. Contains the renal corpsules and the tubules except for parts of the loop of henle, which descend into the renal medulla
Renal Medulla The inner portion of the vertebrate kidney, beneath the renal cortex
Nephron The tubular excretory unit of the vertebrate kidney
Loop of Henle (Ascending and Descending) The long hairpin turn, with a descending and ascending limb, of the renal tubule in the vertebrate kidney; functions in water and salt reabsorption
Collecting Duct Where filtrate from renal tubules is collected; the filtrate is now called urine
Renal Pelvis Funnel-shaped chamber that receives processed filtrate from the collecting ducts and is drained by the ureter
Cortical Nephrons Nephrons located almost entirely in the renal cortex. These nephrons have a reduced loop of Henle
Juxtamedullary Nephrons Nephrons with well-developed loops of Henle that extend deeply into the renal medulla
Created by: alexandrialim
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