Fluid, electrolytes and acid base imbalances
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Terms in this set (118)
- It is the largest single component of he body
Body fluid - Flows in arteries, veins, and lymph vessels
-Have 3 compartments that is secreted into
3 specialized - Joints
compartments for body -Cerebral ventricle
fluid -Intestinal lumen
-Surrounds and permeates the cells
-Lubricant and solvent for metabolic chemical
reaction
Functions of body fluid
-Transports oxygen, nutrients, chemical messengers
and waste products to their destination
- Important in regulating body temperature
Body fluid abnormalities -Volume, concentration, electrolyte composition
can occur by? -result of pathological conditions
Homeostasis Maintain stable internal environment
All body fluid outside of the cells
(1/3) of total body water
Extracellular fluid - Vascular compartment
-interstitial compartment
Dense connective tissue and bones
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Fluid inside the cells
(2/3 of total body water), rich in K+ and magnesium
Intracellular fluid ions, organic and inorganic phosphates, and
proteins.
- Relatively low in sodium and chloride ions.
Total body weight in men 60%
Total body weight in 50%
women
-Decreases with age
Total body water
-more body fat means less % of body water
Located in blood vessels
Vascular Compartment Extracellular
-rich in protien
Located between cells
Extracellular
Interstitial Compartment
-Rich in sodium, chloride, and bicarbonate ions
-relatively low in k+, magnesium, and phosphate ions
Four sub process of fluid Intake,absorption, distribution, excretion
homeostasis
Fluid intake Entry of fluid into the body by any route
Occurs mainly through the GI tract
abnormal: could also occur through prolonged
Fluid absorption
submersion of water or through the lungs in near
drowning
Occurs through the vasculature
Fluid distribution -transfer to and between other compartments as a
result of pressure and concentration gradients
Occurs primary through the urinary tract(2.5L)
Fluid excretion
could also occur through bowels, lungs, skin
Osmol unit of osmotic pressure
osmotic pull exerted by all particles per kilogram of
Osmolality
water
Osmolarity Osmotic pull per liter of solution
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Normal osmolality 290 mOsm
Primary barreier to the movement of solutes in the
body
Pores allow water and small water soluble
Cell Membrane
substances to pass; lipid soluble substances pass
directly through the membrane
Larger proteins can not pass through
Isotonic
Tonicity hypertonic
hypotonic
Isotonic Same osmolality( normal saline)
Hypertonic HIGHER osmolality (3% saline)
Hypotonic LOWER osmolality (1/2 normal saline)
Electrolytes are ionized salts dissolved in water
Most clinically important are
sodium
Potassium
Electrolyte
calcium
magnesium
phosphate
chloride
-Concentration of an electrolyte in plasma is
different from its concentration in the cell
-For body function, electrolyte concentration must
be normal in both the plasma and in the cells
-Control of electrolyte levels are dynamic
Electrolyte homeostasis :If intake of specific electrolyte increases, excretion
of that electrolyte may increase to normalize plasma
levels
:If electrolyte intake decreases, electrolytes may be
redistributed into the plasma to maintain normal
plasma levels
Electrolyte homeostasis Intake, absorption, distribution, excretion
sub categories
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