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Homeostasis 2/3

Fisio

TermDefinition
Asa de Retroalimentación Positiva Mecanismo que amplifica un cambio inicial, alejando la variable del punto de ajuste hasta completar un proceso.
Parto (Retroalimentación Positiva) La presión fetal libera oxitocina, aumentando las contracciones y la presión hasta el nacimiento.
Coagulación (Retroalimentación Positiva) La activación de factores iniciales activa más factores en cascada para formar el tapón plaquetario.
Asa de Retroalimentación Negativa Mecanismo que contrarresta un cambio inicial para devolver la variable a su valor normal.
Eje Hipotálamo-Hipófisis-Tiroides Niveles altos de hormona tiroidea inhiben su propia producción mediante retroalimentación negativa.
Regulación de la Glicemia Asa negativa donde la insulina baja el azúcar y el glucagón la sube según sea necesario.
Insulina (Efector) Hormona pancreática encargada de disminuir los niveles de glucosa en sangre.
Glucagón (Efector) Hormona pancreática que aumenta los niveles de glucosa en sangre ante una hipoglucemia.
Oxitocina Hormona que actúa como señal química para intensificar las contracciones en el asa positiva del parto.
Ruptura de un Vaso Sanguíneo Estímulo inicial que desencadena la cascada de retroalimentación positiva de la coagulación.
Created by: user-2017762
 



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