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10 Cards in this Set
- Front
- Back
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low pressure receptors located:
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great veins and atria
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high pressure receptors located:
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aorta and carotid sinus
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how does body respond to a decrease in effective circulating volume
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renal afferent arteriole less stretch -> renin
decreased NaCl and decreased flow to macula densa -> tubuloglomerular feedback -> renin pressure receptors -> sympathetic nerve -> neurogenic response -> renin renin-----> angiotensin II angiotensin II generalized vasoconstriction increased aldosterone increased ADH decreased GFR increased Na++ reabspr[ton in proximal tub |
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ANP actions
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increased atrial pressure -> increased ANP
ANP: generalized vasodilation decrease RAAS increase GFR decrease Na+ reabsorption in collecting tubule |
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sodium reabsorption in proximal tubule
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4 ways
electrogenic cotransport of Na+ with neutral organic solute such as sugars electro netural Na+ countertransport with H+ electroneutral Na+ cotransport with lactate or HPO4- electroneutral cotransport with Cl- symport |
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area of the tubule thats positive potential difference
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thick ascending limb
positive because the K+ goes back into tubule positive potential allows Mg++ and Ca++ reabsorption |
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area of the tubule thats negative potential difference
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distal tubule and maybe the proximal tubule
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descending limb of henle absorption
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imperm to NaCl
perm to H2O |
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ascending limb of henle absorption
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perm to NaCl
imperm to H2O diluting |
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principle cell
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rapidly absorbs Na+ under influence of aldosterone
aldosterone -> Na+ and K+ channels in the tubule side and Na+/K+ transporter on basolateral side effect of taking in Na+ rapidly is Cl- goes paraculluarly K+ is secreted |
