7.4. Regulación de la concentración urinaria Flashcards

1
Q

Osmolaridad normal

A

290-300 mOsm/L

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2
Q

Núcleo que detecta cambios en la osmolaridad

A

Supraóptico

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3
Q

Localización y tipo de los receptores de AVP

A

V2 → Tubulos colectores

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4
Q

Mecanismo multiplicador contracorriente

A

Gradiente osmótico corticomedular
* Perdida de agua → gancia de urea→ perdida de solutos

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5
Q

UT-A 1,3

A

TC

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6
Q

UTA-2

A

Secreta agua
AdeH y AseH

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7
Q

Concetración y causa de la orina diluida

A
  • 65mOsm/L
  • Baja ADH
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8
Q

Diabetes insípida

A

Falta de ADH → central
Nefrogénica → No respuesta ADH

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9
Q

SIADH

A

Exceso de ADH → Oliguria hipotónica

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10
Q

Cantidad de orina en la vejiga que activa el reflejo de micción

A

200-400ml

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11
Q

S2 y S3

A

Activan m. destrusor y esfinterr interno

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12
Q

Control del reflejo de micción

A

Puente y S4

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