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Urine is a more concentrated solution than glomerular filtrate because of the reabsorption processes that occur in the renal tubules. As the filtrate passes through the proximal convoluted tubule, loop of Henle, and distal convoluted tubule, water and essential solutes like glucose and ions are reabsorbed back into the bloodstream, while waste products and excess solutes remain in the filtrate. This selective reabsorption leads to a decrease in water content and an increase in solute concentration, resulting in the formation of concentrated urine. Additionally, the collecting ducts can further concentrate urine under the influence of hormones like antidiuretic hormone (ADH).
What else can I help you with?
Is water concentration in urine the same as glomerular filtrate or greater?
The water concentration in urine is generally lower than that in glomerular filtrate. During the filtration process in the kidneys, glomerular filtrate contains a high concentration of water, but as it passes through the renal tubules, water is reabsorbed, leading to a more concentrated urine. Therefore, urine typically has a higher concentration of solutes and a lower concentration of water compared to the initial glomerular filtrate.
Why is there no protein in the glomerular filtrate or unine?
Protein is typically absent in glomerular filtrate and urine due to the selective permeability of the glomerular filtration barrier, which consists of endothelial cells, a basement membrane, and podocytes. These structures prevent large molecules like proteins from passing through while allowing smaller molecules and water to filter through. Additionally, any small amounts of protein that may enter the filtrate are usually reabsorbed by renal tubules before urine formation. Therefore, healthy kidneys maintain minimal to no protein levels in urine.
How does urine differ from the original filtrate?
From the original filtrate, a lot of much needed electrolytes (Sodium e.t.c) are reabsorbed (absorbed back into blood), a few substances secreted further into the urine, then loads of water reabsorbed to fine tune body water to exactly how much you need(as much as possible), making urine far more concentrated than the original filtrate.
How does ADH act upon the glomeruli?
ADH (anti-diuretic hormone) acts on the glomeruli by increasing their permeability to water. This allows for water reabsorption from the glomerular filtrate back into the bloodstream, reducing urine volume and concentrating the urine.
What is a major urine formation process?
A major urine formation process is glomerular filtration, where blood is filtered in the kidneys' glomeruli. During this process, water, ions, and small molecules pass from the blood into the Bowman’s capsule, forming a filtrate while larger molecules like proteins and blood cells remain in the bloodstream. This initial filtrate is then modified through tubular reabsorption and secretion, ultimately leading to the production of urine.
Is water concentration in urine the same as glomerular filtrate or greater?
The water concentration in urine is generally lower than that in glomerular filtrate. During the filtration process in the kidneys, glomerular filtrate contains a high concentration of water, but as it passes through the renal tubules, water is reabsorbed, leading to a more concentrated urine. Therefore, urine typically has a higher concentration of solutes and a lower concentration of water compared to the initial glomerular filtrate.
Is water in urine or glomerular filtrate?
Water is present in both urine and glomerular filtrate. Glomerular filtrate is the fluid that is filtered from the blood through the glomeruli in the kidneys, containing water, electrolytes, and small molecules. As this filtrate passes through the renal tubules, water is reabsorbed back into the bloodstream, and the remaining fluid, which becomes urine, contains a lower concentration of water and waste products. Ultimately, urine has a different composition than the original glomerular filtrate due to this selective reabsorption process.
When less glomerular filtrate is formed what kind of urine is formed?
less urine is formed
Difference between filtrate and urine?
Until the liquid reaches the renal pelvis, it is "glomerular filtrate," when it reaches the pelvis, it is called "urine"
What is used to form urine and requires a high blood pressure?
Glomerular filtrate
What percent of the glomerular filtrate is reabsorbed?
the nephrons produce approx 150 litres of glomerular filtrate per day 99% of which is reabsorbed to leave an average of 1.5litres of urine.
Glucose is found in glomerular filtrate but NOT in the urine because?
glucose is transported back into the bloodstream
Where does filtrate become a highly concentrated urine?
In the renal pelvis
What is the urine-producing unit in the kidney called?
Nephrons. This includes the glomerulus where the blood stream encounters a connective tissue filter, the loop of Henle where the filtrate is concentrated and salts are exchanged and the collecting duct into which urine is collected.
Why is there protein in the glomerular filtrate and urine?
The inflammation would increase the permeability of your glomeruli. This retraction of the epithelium will allow the larger protein molecules to go through the filtrate.
What happens to the glomerular filtrate as it passes to the ureter?
As the glomerular filtrate passes through the renal tubules, it undergoes reabsorption of water, ions, and nutrients back into the bloodstream. Waste products and excess substances that were not reabsorbed are left behind and eventually become urine. The final urine then passes through the ureter into the bladder for storage and eventual elimination.
What is glomerular filtrate?
Glomerular filtration rate is the rate at which fluid is filtered by the kidneys. The normal rate for humans is 125mL/min or 180L/day. The fluid that is filtered (and not reabsorbed later) is excreted as urine.
