hormonas con actividad propia Flashcards

1
Q

quien libera GHRH y GHIH(somatostatina)
y GH

A

Hipotalamo nucleo arcuato: GHRH Y GHIH
Adeno celnsomatrotopas: GH

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2
Q

Factores que liberan GHRH

A

noche
pubertad(testo)
tiroideas
simpatica
hipoglucemia
acidos grasos disminuidos en sangre
aminoacidos incrementados

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3
Q

facores que la inhiben liberacion de GHRH

A

Somatomedinas
niveles altos de gh o igf
hiperglicemia
acidos grasos elevados obesidad
AA disminuidos
envejecimiento

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4
Q

que hace el IGF

A

mediador del GH (somatomedina)
vida media larga

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5
Q

que causa deficiencia de la GH

A

Mutacion en el receptor de GHRH en somatotropos
insensibilidad a GH
Hipopituitarismo

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6
Q

que es gigantismo y acromegalia?

A

crecimien to

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7
Q

Funciones de la prolactina?

A

desarollo de mamas y lactogenesis
inhibe ovulacion a GnRH
restribuye grasa en embarazo
facilita cel. beta en pancreas

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8
Q

quien inhibe y que retroalimentacion es prolactina?

A

dopa
retroalim +

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9
Q

causas de hiperprolactinemia

A

prolactinoma
antagonistas de receptores dopaminergicos

tratamiento agonistas dopaminergicos y cirugia

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10
Q

funciones de la hormona estimulante de melanocitos

A

melanogenis(color en neonatos)
forma melanina

CAUSA ADDISON PIGMENTACION ANORMAL

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