excréteur: régulation Flashcards

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1
Q

système rénine-angiotensine

A

rénine + angiotensinogène = angiotensine 2
vasoconstriction + aldostérone + ADH = ++ P

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2
Q

ADH

A

insère aquaporines dans tubules contournés distaux = + réab = +V

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3
Q

aldostérone

A

réabs de Na + et eau dans tubules contournés distaux

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4
Q

FNA

A

par od
vasodilat
inh rénine
+ filtration
inh réab Na+

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5
Q

substabces diurétiques

A

alcool: inh ADH
cafféine: + filtration / inh vasoconstriction/ réab Na+

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6
Q

tampons chimiques

A

molécules préviennent variations pH
associe H+ si pH diminue
dissocie H+ si pH augmente

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7
Q

régulation resp

A

acidose: hyperventilation
alcalose: hypoventilation

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8
Q

régulation rénale

A

acidose: réab HCO3- et sécrétion H+
alcalose inv

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