Throughout most of the distal convoluted tubule, the tubular cells
A) actively transport urea out of the tubular fluid.
B) actively reabsorb organic nutrients, plasma proteins, and ions from the filtrate.
C) reclaim 60-70% of the volume of filtrate at the glomerulus.
D) are impermeable both to water and to solutes.
E) actively transport sodium ions out of the tubular fluid.
E) actively transport sodium ions out of the tubular fluid.
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Damage to the renal medulla would interfere first with the functioning of the
A) Bowman's capsule. B) glomerulus. C) collecting ducts. D) proximal tubule. E) distal tubule.
Which are components of a hepatic portal triad? Choose all that apply.
A. Branch of hepatic artery B. Branch of hepatic portal vein C. Bile duct D. Branch of hepatic vein
Intrafusal muscle fibers:
A. are found in muscle spindles. B. are innervated by alpha motor neurons. C. generate most of the tension in a skeletal muscle. D. fire continuously at a constant rate. E. are only found in extensor muscles.
The incus articulates with which bone(s)?
A) Malleus and stapes B) Malleus, stapes, and temporal C) Malleus, stapes, and tympanic D) Malleus E) Stapes