EXCRETORY SYSTEM
KIDNEY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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filtration
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active transport
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osmosis
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facilitated diffusion
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Detailed explanation-1: -Because the vasa recta contains mostly large proteins and red blood cells (as the other contents have been filtered in the glomerulus), it is very concentrated and therefore water moves into it via osmosis.
Detailed explanation-2: -Tubular secretion is the transfer of materials from peritubular capillaries to the renal tubular lumen; it is the opposite process of reabsorption. This secretion is caused mainly by active transport and passive diffusion. Usually only a few substances are secreted, and are typically waste products.
Detailed explanation-3: -The filtrate absorbed in the glomerulus flows through the renal tubule, where nutrients and water are reabsorbed into capillaries. At the same time, waste ions and hydrogen ions pass from the capillaries into the renal tubule.