PSL201Y1 Final: fluid and ion balance
Document Summary
direct effect on h2o, acting at kidney level. \movement of sodium can indirectly affect water movement. control urine concentration ((why is maintaining fluid balance important for normal cell function?)) *fluid balance is indirectly talking about ion balance. fluid balance must be maintained in the extracellular compartment because the movement of water into and the exit of water out of the cell can have a direct effect cell size. ion balance regulates fluid balance, maintaining homeostatic conditions. extracellular fluid (interstitial fluid 75% + plasma 25%) = 1/3 balance of daily water intake and excretion intake food, drink (2. 2 l/day) *many pathways produce water as by-products urine flows from nephrons of the renal cortex and medulla into the renal pelvis. flow of blood to the kidney occurs via the renal artery. at the kidneys, it first filters through the renal cortex. from the medulla, waste is filtered as urine.
