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GENERALIDADES Flashcards

(18 cards)

1
Q

Hormona

A

Molécula liberada por una glándula que regula la actividad de células en diferentes regiones

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2
Q

NT

A

Molécula liberada por neuronas hacia el espacio sináptico

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3
Q

Hormonas peptídicas

A
  • AA
  • Hidrosolubles
  • Necesitan receptores plasmáticos
    -Receptores EN MEMRANA
  • Efecto prolongado
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4
Q

Hormonas esteroides

A
  • Colesterol
  • Liposoluble
  • Ej. estrógeno y progesterona
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5
Q

Hormonas aminas

A
  • AA + prote con receptores
  • Usan chaperones
  • Hidro y liposolubles
  • Ej, T3, T4 y norepi.
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6
Q

Prote G

A

Actúa con subunidad alfa
- Gs: + AMPc
- Gi: - AMPc
- Gq: PKE y IP3, fosforila

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7
Q

Receptores de GH y PRL

A

Receptores citocina y JAKZ

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8
Q

Interacciones hormonales

A

Dependen de:
- 1 concentración
- 2 receptores
- 3 influencias
° Permisivo, potencia su efecto
° Sinérgico, trabajan en conjunto
° Antagónico, inhibe su efecto

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9
Q

Control de secreción

A

-SN
- Química
- Hormonas

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10
Q

Retro Negativa

A

-+ usada
-Liberación de X hormona, aumenta el Y sustrato en plasma
-El aumento del sustrato inhibirá la liberación de X hormona

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11
Q

Retro Positiva

A

-Se utiliza en OXT y PRL
-+ OXT –> + contracciones –> + OXT

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12
Q

Glándula exocrina

A

Secretan productos hacia conductos que llevan las secreciones a cavidades/órganos.

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13
Q

Glándula endocrina

A

Secretan sus productos hacia el liquido intersticial y difunden hacia la sangre para llegar a la célula diana.

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14
Q

Hipófisis

A

Trabaja en conjunto con hipotálamo, regula la secreción de todas la hormonas

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15
Q

Tiroides y paratiroides

A

Procesos metabólicos y concentración de sales en sangre

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16
Q

Páncreas

A

Niveles de glucosa en sangre

17
Q

Suprarrenal

A

Aceleran el metabolismo

18
Q

Tipos de receptores

A

-Aclopados a prote G
-Citosina
-Aclopados a enzimas
-Ligados a guanil ciclasa