What are the 4 steps of urine formation?
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Urine is formed through four basic processes: glomerular filtration, tubular reabsorption, tubular secretion and water conservation (St. Hilaire, 2015). Glomerular filtration: The first stage in urine formation
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1st step
ultrafiltration in which the blood passes through Bowman's capsules and glomerulus and plasma proteins are left behind forming filtrate.
step2
tubular reabsorption in PCT in which glucose and most of the water along with some other minerals are reabsorbed.
step3
selective secretion occurs in DCT and some ions like k+,hco3-ammonia are secreted actively.
step4
micturition in which urethra relaxes by getting a signal from CNS and urination takes place.
ultrafiltration in which the blood passes through Bowman's capsules and glomerulus and plasma proteins are left behind forming filtrate.
step2
tubular reabsorption in PCT in which glucose and most of the water along with some other minerals are reabsorbed.
step3
selective secretion occurs in DCT and some ions like k+,hco3-ammonia are secreted actively.
step4
micturition in which urethra relaxes by getting a signal from CNS and urination takes place.
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