NURS 220 Lecture Notes - Lecture 28: Distal Convoluted Tubule, Proximal Tubule, Oliguria
Document Summary
Regulation of body fluid, electrolyte and acid base balance. Extracellular fluid (ecf)-fluid around cells inside body: 33% Electrolytes in plasma and interstitial fluid-they"re pretty close. High sodium outside of cell, high potassium inside of cell. Electrolytes and proteins different in the ecf and icf-must know extracellular concentrations. Intracellular concentrations: controlled by the nature of the cell membrane. Extracellular concentration: controlled by negative feedback (homeostatic) systems-some neurological, most hormonal. Filters all those things and reabsorbs most through the proximal convulent tubule then controlled even more in distal convulent tubule. Bone-stores calcium and can pull it out of them when. If you decrease your input, you"ll decrease your output and vice versa. Osmolarity effects movement across cell membranes. (2) acts as a transporter and also (3) effects pressure of tubes (ie dehydration causes map to go down). (4) Medium for chemical reactions and (5) participant in chemical reactions. General body structure: skin turgor, surface lubrication, shock absorption, etc. (6) body temperature regulation.
