<em>In the inner medulla, urea recirculates, creating a greater osmotic gradient. It follows the concentration gradient formed by ADH-sensitive water reabsorption into the interstitial space from the collecting duct. The remaining water is drawn from the descending structures by increased interstitial osmolarity. </em>
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<em>To maintain the vertical osmotic gradient, the blood supply to the renal medulla serves as a countercurrent exchanger. - The medullary vertical osmotic gradient is maintained by the vasa recta.</em>
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<em>It enhances both water and urea permeability in the inner medullary collecting ducts, allowing urea to diffuse passively down its concentration gradient into the interstitial fluid. This contributes to the osmotic gradient and aids water absorption.</em>
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Answer:
an organism is the highest level of organization
Explanation:
a tissue is a group of cells of the same function and shape working together
an organ is a group of tissues working together to perform a specific task
an organ system is two or more organs working together to execute a specific process
an organism is all organ systems functioning together to provide all process necessary for living
It can have a granitic composition for the reason that it can be composed of the similar minerals like that of granite, however the magma cools right away prior to crystals having a chance to form in the rock rather than forming into a rock created with interlocking crystals.
18) Cell B to cell A because the receptors of cell A are able to recognize the signals from cell B (signal 1). (3)
Genetic variation allows many different traits, and allows the choice of using one trait while not using another, which allows some to survive, and others to die. Without it, if there is a disease, the whole population would be wiped out