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15 Cards in this Set
- Front
- Back
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Define Concentration |
measure of the amount of asolute/electrolyte relative to the amount of water |
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Define Osmolality |
- measure of the number of solutes per kilogram ofwater in the different body compartments. - osmolality of the ICF and ECF are equal |
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Osmotic concentrations in the ICF and ECF are equal except for... |
In the kidneys |
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What is the osmole gap and why is it important? |
- differencebetween the observed and calculated osmolality - importantin the diagnosis of acid-base imbalance - If the gap is large it indicates thepresence of another solute |
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Define Oncotic pressure |
- Oncotic pressure or colloidal pressure is the osmotic pressure generated by plasma proteins. |
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Why is there oncotic pressure? |
- pressure is created when proteins are too large to cross the capillary blood vessels. - oncotic pressure = osmotic pressure in interstitial fluid |
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Decreases in oncotic pressure causes H20 to move where? This could lead to what condition? |
- Into the interstitial fluid -Edema |
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What are the major electrolytes in the ECF? |
Sodium, Bicarbonate, Calcium, Choride |
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What are the major solutes in the ECF? |
- Glucose, Urea, Plasma proteins |
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In the ICF what electrolytes and solutes are found in higher concentrations? |
Potassium, Magnesium, Hydrogen Phosphate |
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Is H20 actively transported? |
No is permeable but in kidneys is facilitated through diffusion via aquaporin protein channels in distal collecting tubules. |
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What is the anti-dieretic hormone and where does it act? |
Vasopressin is released from the pituitary gland and acts on the kidneys reabsorbing water through the stimulation of the aquaporin |
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Lethargy, unconsciousness and possible coma could result from? |
Loss of ICF H20 |
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Loss of H20 from the ECF could result in what symptoms? |
Hypoxia kidney failure liver failure low blood pressure ishemia |
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During Dehydration is aldosterone or vasopressin released? |
Both |
