Fisio Hipotalamo-Hipofisis Flashcards

1
Q

2 vias cerebrales de conexion hipotalamo hipofisis

A

-fibras nerviosas (Neurohipofisis)
- Sistema portahipofisiario( Adenohipofisis) sanguineo

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2
Q

Funciones del hipotalamo

A

Regulacion de temperatura
Emociones y comportamiento
Ritmos Circadianos
Ingesta Alimentos
Ritmos cardiacos

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3
Q

Que es una hormona?

A

Sustancia quimica secretada en los liquidos corporales que ejerce control fisiologico sobre otras cel del cuerpo

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4
Q

Clasificacion Hormonal

A
  • Esteroidales
    -Derivadas del aa tirosina
    -Derivados de prot y polipeptidos
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5
Q

Esteroidales (hormonas)

A

A partir del colesterol
No se almacenan
Son lipofilicas

-suprarrenal
Ovarios/placenta
Testiculos

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6
Q

Derivados del aa tirosina( hormonas)

A

Tiroides (t3 y t4)
Medula suprarrenal (Adrenalina y Noradrenalina)

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7
Q

Proteinicas y polipeptidicas ( hormonas)

A

Si se almacenan
Sintetizan de manera inactiva ( prehormonas)

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8
Q

Hormonas proteinicas y polipeptidicas ( sistesis)

A

Se sintetizan en extremo rugoso del RE de las cel endocrinas
Primero como prehormonas
Se cortan y forman prohormonas
En el aparto de golgi se empaquetan en forma de vesiculas
Salen por exocitosis y se cortan de nuevo

Forman HORMONAS NORMALES

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9
Q

Hipotalamo ( peptidicas)

A

GHRH
GHIH
CRH
TRH
GnRH

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10
Q

Hipotalamo ( aa tirosina)

A

PIH

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11
Q

Adenohipofisis ( peptidica)

A

ACTH
TSH
FSH
LH
GH
Prolactina

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12
Q

Neurohipofisis ( peptidica)

A

Oxitocina
ADH

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13
Q

Tiroides ( peptidica)

A

Calcitonina

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14
Q

Tiroides ( aa tirosina)

A

T3 y T4

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