InfantVenus1
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explain the ultrafiltration process? common 6 marker
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Shayhay
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Blood from afferent arteriole containing constituents e.g. amino acids, glucose, RBC's flows towards the bowmans capsule at a high pressure.
The flood is filtered through the capsule as the basement membrane acts as a filter, only allowing the constituents of the blood RMM<69000. This therefore filters out the RBC's and larger compounds.
The unfiltered blood flows away via the efferent arteriole, at a relatively high pressure as well as this arteriole is smaller than the afferent arteriole.
The filtered blood, now referred to as filtrate continues to flow through the nephron, with constituents being absorbed at various stages, e.g. at the PCT, amino acids are reabsorbed along with glucose, known as reabsorption.
NaCl and Water are present in the loop of henle and are selectively absorbed and reabsorbed via osmosis, facilitated diffusion and active transport.
The collecting duct is where the urea passes out along with the urine, heading towards the ureter and eventually expelled from the body
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