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15 Cards in this Set
- Front
- Back
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What is net hydrostatic pressure?
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Pushes water out of plasma and into interstitial fluid
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What is net colloid osmotic pressure?
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Draws water out of interstitial fluid and into plasma
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What is edema?
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It is a net disturbance among net hydrostatic pressure, and net colloid osmotic pressure
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What is insensible water loss?
What is sensible? |
Water lost from the organism via urine, feces and slow skin water evaporation
Body fluid lost through sweat |
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What is a fluid shift
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It is a rapid water movement between ECF and ICF
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What is the predominant cation in ECF?
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Na+ is the prevaling cation. 90% of osmotic gradient is from NaCl
Normal conc in ECF are app 140meq/L |
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What is the dominant cation in ICF?
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K+- conc can reach 160meqL
Extracellular conc are app 3.8-5.0 |
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If you perspire heavily and consume only pure water, what will be the Na+ result?
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You will lose Na+, and the Osmotic conc will drop briefly
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What homeostatic mechanisms can monitor ECF volume indirectly by monitoring blood pressure
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Baroreceptors, located at the carotid sinus, aortic sinus and right atrium
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If ECF volume is inadequate, what will ensue?
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Blood pressure declines and the Renin-angiotensin-aldosterone system is activated
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What is the most abundant mineral in the body?
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Calcium-99% is in the skeleton
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What two substances raise plasma calcium, and which substance opposes them
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PTH and Calcitriol raise Ca+
Calcitonin opposes their action |
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How do PTH and Calcitriol raise plasma calcium?
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They increase Ca+ absorption in the digestive tract and at the distal convoluted tubule in the nephron
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The adult body contains how much Mg+ and where is it deposited?
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29 g of Mg, and app 60% of it is within the skeletal apparatus
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Where is the Mg in body fluids stored?
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In the ICF where its conc averages app 26meq/L
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