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| Description: In the center of the diagram is homeostasis, or a normal sodium concentration in E C F. This is the starting point. Two paths flow from homeostasis. The first path first leads to homeostasis disturbed. increased sodium levels in E C F, which leads to osmoreceptors in hypothalamus stimulated, which leads to A D H secretion increases, in which the secretion of A D H restricts water loss and third mechanisms promote water consumption, which leads to recall of fluids, in which, because the E C F osmolarity increases, water shifts out of the I C F, increasing E C F volume and decreasing E C F sodium concentrations, which leads to homeostasis restored. decreased sodium levels in E C F. The second path first leads to homeostasis disturbed. decreased sodium levels in E C F, which leads to osmoreceptors in hypothalamus inhibited, which leads to A D H secretion decreases, in which as soon as the osmotic concentration of the E C F drops by 2 percent or more, A D H secretion decreases, so thirst is suppressed and water losses by the kidneys increase, which leads to water loss reduces E C F volume, concentrates ions, which leads to homeostasis restored. increased sodium levels in E C F. Picture Stats: Views: 84 Filesize: 341.52kB Height: 2179 Width: 1222 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=49800 |