Fisio III sist renal

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Last updated 8:43 PM on 2/6/26
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22 Terms

1
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nefrons corticals

80-85% i la nansa de Henle no penetra la medul·la

2
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nefrons juxtamedul·lars

15-20% i la nansa de Henle si que penetra la medul·la

tambe anomenats vasos rectes pq estan molt ben irrigats

3
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processos formacio orina

filtracio, reabsorcio i secrecio

4
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filtracio

pas aigua i subst cap a la capsula de Bowman

5
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reabsorcio

pas de subst que no interessa eliminar dels tubuls renals → sang

6
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secrecio

pas de productes de rebuig de sang → tubuls renals

7
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cel mesangials

intercalades entre capilars amb activitat fagocitica

8
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podocits

cel que formen paret visceral capsula de Bowman formant fenedures

9
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disminucio radi arteriola aferent

disminucio PHG i TFG

10
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disminucio radi arteriola eferent

augment PHG i TFG

11
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efectes renals SNS intens

VC disminuint radi arteriola aferent i eferent

12
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efectes renals SNS lleu

VD augmentant radi arteriola aferent i eferent

13
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sistema angiotensina

disminueix TFG

14
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PNA (peptid natriuretic auricular)

augmenta TFG

15
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tubul contort proximal

Na, glu, aa, HCO3- i H+

16
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branca ascendent nansa de Henle

permeable aigua i impermeable ions

17
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branca descendent nansa de Henle

impermeable aigua i permeable ions

18
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tubul contort distal

Na/Cl, Ca i aigua

19
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trigon

zona triangular a l’inferior de la bufeta formada x teixit muscular llis

20
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esfinter uretral intern

involuntari

21
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esfinter uretral extern

voluntari

22
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reflex de miccio

no interve esfinter uretral extern

als 200-400mL es presiona part de la bufeta x activar centre de miccio (SNPS)

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