NURS 464 Lecture Notes - Lecture 5: Polydipsia, Atrioventricular Block, Intravenous Therapy
Document Summary
Fluid in the body is in a dynamic state. Much of the human body is composed of fluid. Chapter 44 fluid and electrolyte imbalances body water that has solutes dissolved in it. Some of the solutes are electrolytes, or charged particles (ions). Electrolytes such as sodium (na+), potassium (k+), calcium (ca2+), magnesium (mg2+), chloride (cl-), and inorganic phosphorus (pi) ions must be present in the proper concentrations for cells to function effectively. Extracellular fluid (fluid outside the cells) is made up of . Interstitial fluid (between the cells and outside the blood and lymphatic vessels) Extracellular fluids accounts for about 1/3 of total body fluid, and intracellular for 2/3 of total body fluid (except at birth) The concentrations of electrolytes in fluid differ depending on the fluid compartment. Extracellular fluid is rich in sodium ions; intracellular fluid, by contrast, is low in sodium ions but rich in potassium ions.
