HNF 150 Lecture Notes - Lecture 20: Sodium Chloride, Shock Absorber, Lubricant
Document Summary
Water: solvent: dissolves solute, carries nutrients, waste removal, cleanses tissues and blood, participates in chemical reactions, lubricant around joints, shock absorber, body temperature regulation. Electrolytes: compounds that separate into ions within water and able to conduct an electrical current. Cations- positive charge (ex. sodium na+ and potassium k+) Lecture notes: occurs when (3), you don"t drink enough fluids, diuretics (alcohol, caffeine, you eat lots of salt and sugar, effects. Adh or vasopressin: hormone released by the hypothalamus/pituitary. Causes water to be reabsorbed by the kidneys. Osmoreceptors respond to how dilated or concentrated the blood is. Total water intake: men (19 30 y): 3. 7 liters (~16 cups, women (19 30 y): 2. 7 liters (~11 cups) Fluids (drinking water and beverages): men: 3. 0 liters/day (~13 cups, women: 2. 2 liters/day (~9 cups) Kidneys cannot remove water fast enough: water accumulates in blood and dilutes sodium in blood serum, hyponatremia: water pulled into cells, causing them to swell.
