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Urine formation involves
filtration of the plasma, reabsorption from the filtrate, and the secretion into the filtrate.
At the rate of 125 ml of filtrate/minute, estimate the amount of filtrate formed in 24 hours.
Decreased blood colloid osmotic pressure affects renal function by
increasing net filtration pressure.
What pressure tends to force fluid from the glomerulus through the filtration membrane into Bowman's capsule
glomerular capillary pressure
Substances that are cotransported into proximal convoluted tubule cells include
glucose molecules with sodium ions
Glucose is usually completely reabsorbed from the filtrate by the time the filtrate has reached
the end of the proximal convoluted tubule
The collecting ducts and distal convoluted tubles
vary in their permeability to water relative to the amounts of ADH present.
When ADH binds to receptor sites on distal tubule cells
the distal tubule is more permeable to water
diffuse out of the collecting duct into the interstitial fluid of the medulla and then diffuse into the descending loop of Henle
Tubular reabsorption and tubular secretion differ
that tubular secretion adds materials to the filtrate ; tubular reabsorption removes materials from the filtrate.
By the time filtrate reaches the tip of the loop of Henle,
80 % of the filtrate volume has been reabsorbed
Urine concentration and volume depend on water reabsorption in what
distal convoluted tubule and collecting ducts
Aldosterone exerts its effect on the kidney tubules by
increasing the synthesis of the transport molecules for sodium
consumption of alcohol increases urine production by
inhibiting the release of ADH from the posterior pituitary
When macula densa cells experience increased NA+ concentration in the filtrate, they respond by
decreasing renin secretion.
Arrange the following structures in correct sequence
2) renal pelvis
4) urinary bladder
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