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phys final study

TermDefinition
Kidney filtration he first step in blood processing, is a physical process that occurs in the kidneys’ 2.5 million renal corpuscles
reabsorption the second step in urine formation, takes place by means of passive and active transport mechanisms from all parts of the renal tubules.
urea s a nitrogen-containing waste formed as a result of protein catabolism . Actually, toxic ammonia is formed first, but much of it is quickly transformed into the less toxic urea.
reabsorption of PCT step on - 3 1. Sodium is actively transported out of the tubule fluid and into blood. 2. Glucose and amino acids “hitch a ride” with sodium and passively move out of the tubule fluid by means of the sodium cotransport mechanism. 3. Chloride ions passively move int
reabsorption of PCT step 4-5 4.and chloride out of the tubule fluid into plasma creates an osmotic imbalance (the blood plasma having a higher osmotic pressure than the filtrate), so water is obliged by the principle of osmo-sis to passively move into blood. 5. Osmosis of water betw
reabsorption of PCT step 6-7 6. About half the urea present in the tubule fluid passively moves out of the tubule, with half the urea thus left to move on to the nephron loop. 7. The total content of the filtrate has been reduced greatly by the time it is ready to leave the PCT. Mos
ADH Central role in urine volume, reduces water loss by body
Aldosterone Decrease urine volume
ANH also influences water reabsorption in the kidney. ANH is secreted by specialized muscle fibers in the atrial wall of the heart. Inhibits ADH
tubuloglomerular feedback helps protect the kidney from rapid systemic arterial pressure.
Created by: mindygrimshaw
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