NURS 245 Lecture Notes - Lecture 6: Distal Convoluted Tubule, Extracellular Fluid, Oliguria
Document Summary
Intracellular electrolytes are controlled geneically and can"t be measured clinically. The extracellular luid that surrounds cells creates the stable environment in which the cells live. This is subdivided into: intersiial luid (80%). We measure this to get an idea of the intersiial luid. Since we can"t directly measure the electrolyte composiion of intersiial luid, we measure the electrolytes in the plasma and take that as a relecion of what"s inside the intersiial luid. We will look at the balance of the following electrolytes: water, sodium, potassium, calcium, free hydrogen ions. General concept of all balance: we start with a simulus. This simulus has to be recognized by a receptor and that moves up an aferent pathway to an integraing center. Hypothalamus is usually always the center and decides what we"re going to do next. That message travels down an eferent pathway to an efector cell. There is some type of feedback to what that simulus is.
