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Cards In This Set
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A glomerulus is
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A knot of capillaries within the renal corpuscle
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What does urine pass thru to get out of the body
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CD, renal pelvis, ureter, bladder, urethra
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Substances larger than ___ are normally not allowed to pass thru the filtration membrane
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Albunim
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Describe functions of the loop of henle
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Enables production of hypertonic urine, creates high interstitial NaCl concentration, site of obligatory water reabsorption, relies on countercurrent multiplication
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What happens when ADH levels decrease
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Osmolarity of the urine decreases
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About 2/3rds of the body fluid is within calls and called _____ fluid
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Intracellular
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The kidneys not only remove waste products from the blood, they also assist in the regulation of what functions
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BP, blood ion levels, blood pH, blood volume
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Put in order how the blood flows to the kidneys
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Renal artery, interlobar artery, arcuate artery,cortical radiate artery, afferent arteriole, glomerulus, efferent arteriole, peritubular artery
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Which of the nephrons components is largely confined to the renal medulla
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CD
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Approximately _____ liters of glomerular filtrate enter glomerular capsules each day
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180
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Under normal conditions, glomerular filtration depends on what 3 pressures
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Blood hydrostatic pressure, capsular hydroststic pressure and blood colloid osmotic pressure
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Measurements of the functions of a nephron reveals a glomerular capillary pressure of 69 mm Hg & a capsular pressure of 15 mm Hg assuming that the colloid osmotic pressure is 30 mm Hg & that essentially no plasma proteins are filtered by the glomerulus, what is the net filtration pressure
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24 mm Hg
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Blood colloid osmotic pressure in the glomerulus is generated by what
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Presence of a large, non-diffusible proteins in the urine
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What is the main force in a nephron that causes filtration
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Glomerular hydrostatic pressure
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What are the mechanisms for producing concentrated urine
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Secretion of ADH by neurohypophysis, a high concentration of NaCl in the interstitial fliud that surrounds the CD's, increase in water reabsorption, aquaporins being inserted into the membranes of the CD cells
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