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This quiz contains 9 questions from a mix of 1 subtopics.
Which of the following substances is NOT actively reabsorbed in the proximal convoluted tubule?
sodium ions
urea
glucose
amino acids
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The are organelles that provide the energy needed for the active transport of substances in the proximal convoluted tubule.
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List 3 substances that are reabsorbed into the blood from the proximal convoluted tubule.
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Which of the following does NOT occur in the proximal convoluted tubule?
co-transport of sodium and glucose
active transport of sodium ions
diffusion of substances into blood capillaries
alteration of membrane permeability
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What is the main role of microvilli in proximal convoluted tubule cells?
to increase the surface area for reabsorption
to anchor cells to the basement membrane
to facilitate cell-to-cell communication
to provide structural support
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How do substances like glucose move from PCT epithelial cells into blood capillaries?
co-transport
exocytosis
simple diffusion
active transport
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How does the distal convoluted tubule regulate blood pH?
by converting carbonic acid
through bicarbonate buffering
by selectively reabsorbing ions
by secreting hydrogen ions
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What segment of the nephron establishes an osmotic gradient to allow water reabsorption?
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How does the loop of Henle help with water reabsorption?
by decreasing the water potential in the medulla
by actively transporting water into blood vessels
by increasing the water potential in the medulla
by passing water from the ascending to the descending limb
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