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Reabsorption is the movement of solutes out of the tubules, through the interstitial fluid and into the capillaries. True False 2.
1.Reabsorption is the movement of solutes out of the tubules, through the interstitial fluid and into the capillaries.
Secretion is the movement of solutes out of the capillaries, through the interstitial fluid and into the nephron.
Which of the following substances do NOT enter the glomerular capsule (Bowman's capsule) from the glomerulus during initial filtration? Choose all that apply.
Individual amino acids
Creatinine and urea are described as _________________ in the initial filtrate.
The presence of ADH (anti diuretic hormone) helps the collecting duct _________________ water.
The descending limb of the nephron loop (Loop of Henle) is impermeable to water and the ascending limb is impermeable to ions.
Reabsorption of water from the descending limb is a form of __________________ transport.
The osmolarity of the interstitial fluid of the medulla is the most concentrated ____________.
near the cortex
deeper in the medulla
at the start of the medulla
There is no difference in concentration.
The osmolarity of filtrate is most concentrated _________________.
when entering the nephron loop
at the bottom of the nephron loop
when exiting the loop and entering the distal convoluted tubule
If the nephron loop in a different organism (like a kangaroo rat from the desert) was LONGER than the human nephron loop, the maximum medullary interstitial osmolarity would be ____________ compared to 1200 mOsm/L.