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26 Cards in this Set

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  • Back
Intracellular Fluid (ICF)
Comprises all the fluid within the cells, about two-thirds of TBW.
Extracellular Fluid (ECF)
All the fluid outside of the cells, about one-third of TBW. Divided into two smaller compartments.
*Interstitial fluid (the space between cells & outside the blood vessels)

*Intravascular Fluid (blood plasma)
Interstitial fluid
The space between cells & outside the blood vessels.
Intravascular Fluid
Blood plasma.
Isotonic fluid excesses
The result of excessive administration of intravenous fluids, hypersecretion of aldosterone, or the effects of drugs such as cortisone.
Isotonic fluid loss (isotonic dehydration)
Causes contraction of the ECF volume w/ weight loss, dryness of the skin, and mucous membranes, decreased urine output, & symptoms of hypovolemia.
When lymphatic channels are blocked or surgically removed, protiens & fluid accumulate in the interstitial space causing:
Metabolic acidosis
Noncarbonic acids increase or bicarbonate is lost from ECF.
Metabolic alkadosis
Excessive loss of metabolic acid occurs, bicarbonate increases, causing:
Natriuretic horomones (peptides)
Promote urinary excretion of sodium & water & decrease blood pressure.
Net filtration
The movement of fluid back & forth across the capillary wall.
Can be eliminated by the kidneys.
Can be eliminated as CO-2 gas.
Neurons in the hypothalamus.
Potassium (K+)
The major intracellular electrolyte & is essential for normal cellular functions.
Potassium tolerance
The body's ability to adapt to increased levels of potassium.
Pure sodium deficit
Caused by extrarenal losses, such as vomiting, diarrhea, gastrointestional suctioning, burns, or the use of diuretics.
An enzyme secreted by the juxtaglomerular cells of the kidney.
Renin-angiotensin-aldosterone system
The complete system.
Respiratory acidosis
A decrease in aveolar ventilation in relation to the metabolic production of CO2.
Respiratory alkadosis
Occurs when there is aveolar hyperventilation & excessive reduction in plasma CO2 levels (hypocapnia).
Sodium (Na+)
Accounts for 90% of the ECF cations.
Starling's hypothesis
Net filtration=Force filtration-Forces opposing filtration.
Syndrome of inappropiate secretion of ADH (SIADH)
Occurs when factors other than hyperosmolality or hypovolemia stimulate secretion of ADH.
Volume senstive receptors
Nerve endings that are sensitive to changes in volume and pressure.
Water deficit
The most common cause is increased renal clearnce of free water as a result of inpaired tubular function or inability to concentrate urine, as w/ diabetes insiidus.