* direct renal * indirect renal (renin-angiotensin)
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Direct Renal Mechanism in Renal Regulation
change BV indep. of hormone
* ^BP or BV * ^ filtration * eliminate ^ urine * THEREFORE reduce BP * decrease BP or BV * kidney preserve water + fluid retention * less filtration * less urine * BP ^
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Indirect Renal Mechanism in Renal Regulation
Renin-angiotensin
* controls BV + arterioles
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Renin-Angiotensin System with less BP
less arterial BP →
release renin →
trigger production of angiotensin II → (vasoconstrictor)
aldosterone + ADH secretion →
conserve fluid→
\ \*\*BP decreases, everything else increases
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Renin-Angiotensin System with ^ BP
\*\*BP increases, everything else decreases
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Hypotension
LOW BP
Below 100/60 (systolic/diastolic)
* too little blood to fill vessels * heart is too weak to drive blood