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Anna71 [15]
4 years ago
11

Explain the relationship between the sensors, control center communication systems and targets when maintaining homeostasis.

Biology
1 answer:
Aleks04 [339]4 years ago
4 0

Answer:

Homeostasis es la constancia del Medio interno, aún frente a las variaciones del Medio externo

(Cannon). El Medio interno se relaciona con la complejidad de los seres vivos.

Según Teoría de la Evolución, el primer ser vivo surgió en el mar, formado por una sola célula, la cual

intercambiaba nutrientes y desechos metabólicos con su Medio externo.

De los Unicelulares evolucionaron los Pluricelulares, los cuales debían solucionar el problema del

intercambio de nutrientes, oxigeno y desechos de las células que se encuentran en su interior. De esta

forma se desarrolló un ambiente interno, que permitió la vida libre e independiente.

El Medio interno está representado por el Líquido extracelular que rodea a las células de los Pluricelulares,

con una composición estable que permite los intercambios metabólicos y la comunicación celular.

El 60 % del peso corporal humano es agua, la cual se encuentra distribuida en un 40% del peso corporal en

el Líquido intracelular y en un 20% en el Líquido extracelular.

Del total del Líquido extracelular un 80% corresponde al Líquido intersticial y un 20% al Plasma sanguíneo.

El Líquido intersticial o tisular debe mantenerse constante, para lo cual se requiere la ayuda del

Sistema circulatorio.

El Plasma sanguíneo intercambia oxigeno y nutrientes, dióxido de carbono y desechos con el Líquido

extracelular a nivel de los Capilares sanguíneos, debido a lo cual en ambos líquidos la concentración de

solutos es igual, a excepción de las proteínas.

Según Starling, existe un equilibrio entre el volumen de líquidos que sale del capilar arterial y el que

vuelve por los capilares venosos.

El Líquido intracelular varía de célula a célula del punto de vista cuantitativo, guardando similitud en la

composición celular desde el punto de vista cualitativo

Explanation:

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