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7 Cards in this Set
- Front
- Back
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What's homeostasis? |
Maintneance of a constant internal environment in the body by a physiological process |
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Your normal extracellular fluid volume has increased. Why? |
-fluid gain -Na+ gain & reflex fluid gain |
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What will correct the increased extracellular fluid volumes? |
Secretion of atrial natriuretic peptide (ANP). It causes the release of natriuretic peptide |
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What is caused by ANP release? |
= Return to a normal extracellular fluid volume via....
-decreased aldosterone ( so more sodium is excreted in urine)
-decreased ADH (anti-diuretic hormone) release....so DCT is less permeable to water and more water is excreted in urine. And thirst is decreased. |
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The extracellular fluid volume is low. What are the two causes? |
-loss of Na+ &- loss of fluid |
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What corrects this decreased ECF concentration? |
Secretion of RAAS. It increaes renin secretion and angiotensin activation |
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What will RAAS & the renin-angiotensin system result in? |
-increased aldosterone secretion(to hold on to sodium) &- increased ADH secretion to allow DCT ti be permeable to water reabsorption & increase thirat |
