RENAL 1 Flashcards

Learn Renal First Class

1
Q

La mayoria de nefronas son…? %

A

Corticales 70-80%

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2
Q

Cual nefrona es la mas larga?

A

Yuxtamedulares

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3
Q

Unidad filtradora de la nefrona?

A

Glomerulo

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4
Q

Gasto cardiaco de riñones

A

Cuarta parte

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5
Q

Cuantos ml de flujo plasmático es filtrado por nefronas?

A

1400

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6
Q

Tubulos renales

A

Ultimo tubulo colector
Mayor conc. De orina
Actuan hormonas antidiuréticas

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7
Q

Dibuja estructuras de las nefronas

A

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8
Q

Presiones arteriolas y tubulos

A

Aferente alta en gromerulo 100mmgh endotelio fenestrado

Eferente baja porque ha ocurrido filtración
En tubulos tmb baja

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9
Q

Flujo plasmatico por minuto
Qp=?
Alb=?

A

Qp 700ml/min

Alb 40g/L

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10
Q

Glomerular filtration rate=?

Alb?

A

GFR= 125ml/min

Alb 4mg/L

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11
Q

Dibujar estructura de glomérulo

A

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12
Q

3 glomerular filtration barrier

A

A celulas endoteliales glomerulares
Con poros

B membrana glomerular
Lamina rara interna
Lamina densa
Lamina rara ext

C podocytos
Proteinas estructurales y enzimas
Filtration slit
Filtration diaphragm (nephrina)
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13
Q

Donde se encuentra colageno IV y V

A

En lamina densa de la membrana glomerular o glomerular basement membrane

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14
Q

Donde se encuentra nefrina

A

En el diafragma de filtracion de los podocytos

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15
Q

Reabsorción de glucosa y sodio

A

Tienen canal especializado que regresa al intersticio y al capilar peritubular
Esto sucede en tubulo proximal

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16
Q

Tipos de transporte de glucosa y sodio

A

Paracellular y transcellular (trans apical, basal lateral)

Para=Between tight junctions

17
Q

Steps for water and urea reabsortion

A

Solutes reabsorbed actively, increase osmolarity of peritubular fluid and plasma

Water reabsorbed by osmosis

Urea reabsorbed passively

18
Q

Tight junctions

A

Mas en procion gruesa
Menos hay mas paso
Una alteracion a las claudinas trae problemas con reabsorción de agua

19
Q

Donde se encuentran aquaporinas

A

En tubulos colectores

20
Q

Que hacen la celulas de la macula densa

A

En un shock producen renina y aumentan vasoconstricción para mayor irrigación