Le Rein Flashcards

1
Q

Anatomie du rein 4

A

glande surrenale secretant des hormones.

Cortex ,( 1 M nephrons)la medulla , Le bassinet , papille.

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2
Q

Vasculirisation du rein 3

A

Filtration glomerulaires
Les reabsoptions tubulaires
Les secretions tubulaires

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3
Q

Corpuscul renal 2

A

glomerule + capsule glomelrulaire

le filtrat glomerulaire

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4
Q

Pressions qui influencent la filtration 3

A

pompe cardiaque
hydrostatique capsulaire
osmotique

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5
Q

Debit de filtration glomerulaire (DFG) 2

A

Volume filtrat/min 125ml/min

=pressionsurface totalepermeabilite de la surface

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6
Q

Regulation de la filtration 2

A

DFG constant en tout temps. mecanismes nerveux et hormonaux.

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7
Q

Modification chimiques du filtrat (tube proximal) 3

A

Transport passif obligatoires ( 0 ATP, gradient osmotique)
Transport actif obligatoires (ATP, inverse gradient)
Transport actifs ou passif facultatif ( message hormonaux , pH ou pression)

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8
Q

Reabsorption de l’eau dans la branche descendante grele de l’anse 2

A

Permeable ;Mouvement passif H2O
Enfencement dans la Medulla
Filtrat -V mais LI diliuee

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9
Q

Reabsorptions de NaCl dans branche ascendante de l’anse 3

A

Permeable Na+ et Cl-
NaCl +++ , perte passif puis active
Filtrat perd V et - C

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10
Q

Elimination des ions K+ 2

A

K+ permet kaliemie, par l’aldosterone. glandes surrenales en cas d’hyperkaliemie +++ K

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11
Q

Role du tube distal pH 1

A

pH hormones Aldosterone (NA+) de H+,Na+,HCO3- sang vers filtrat.

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12
Q

Role du tube collecteur dans la concentration de l’urine 3

A

tube distal, filtrat hypo-osmotique.
+en+ concentre , fuite de leau
Reabsoprbtions d’uree maintient gradient osmotique fondamental sortie d’eau. recycle dans le TC. Vasopressine ou ADH.

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13
Q

Controle concentration urine par ADH 2

A

hyphotalamus(osmorecepteurs)–>hypophyse–>neurohypophyse (aquaporines)
ADH controle reabsorption l’eau
(deshydratation)

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14
Q

Systeme renine-Angiotensine-Aldosterone (RRAA) fonctions 1.2

A

moduler reabosption Na+ (pH et sang)

Angiotensine-Aldosterone PA et Volume sanguin

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15
Q

Systeme renine-Angiotensine-Aldosterone (RRAA) 2.2

A

AJG, detecter chute PA et Na+ pour RRAA (la renine)

Angostine (PA,soif,ADH,Na+)

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