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Alecsey
5 days ago
5

Which of the following is most consistent with homeostasis? Select one: a. As blood pressure falls, blood flow to cardiac (heart

) muscle decreases. b. As the mean blood pressure gradually increases in aging people, the blood vessel walls become thinner. c. Men working in a hot environment drink large quantities of water, and their urine volume increases. d. As body temperature decreases, blood vessels in the periphery dilate. e. Elevated blood glucose levels cause insulin secretion (insulin causes cells to take up glucose) to increase.
Biology
1 answer:
inysia [656]5 days ago
5 0

Response:

Las respuestas más adecuadas serían tanto C como E.

Clarificación:

La homeostasis se refiere a la habilidad del cuerpo para conservar un equilibrio estable. En otras palabras, si el cuerpo sufre un estrés, generará una respuesta que contrarresta ese estrés y vuelve a restaurar su estado anterior al mismo.

A. Esto implica una relación de causa y efecto (BP bajo --> retorno venoso bajo). No describe una respuesta fisiológica activa que contrarreste la caída de BP, como el aumento de la frecuencia cardíaca. No es homeostasis.

B. Nuevamente se describe una relación de causa y efecto. El engrosamiento de las paredes de los vasos sanguíneos no es una respuesta para contrarrestar el aumento de BP. No es homeostasis.

C. Aquí se describe una respuesta a un estrés. Los hombres están ingiriendo más agua. El cuerpo reacciona desechando ese exceso de agua, regresando el organismo a su estado anterior. Esto ilustra la homeostasis.

D. Esto suena como homeostasis, pero en realidad es lo opuesto a lo que sucede. La dilatación de los vasos sanguíneos periféricos es una forma en que el cuerpo pierde calor. Esto es lo contrario de lo que se debería hacer si el cuerpo se enfría; esto agravaría el estrés, lo que es contrariamente a la homeostasis. La respuesta natural a temperaturas frías es la constricción de los vasos sanguíneos para conservar el calor.

E. Esto describe homeostasis. El estrés es un aumento de glucosa. La respuesta del organismo para manejarlo es liberar insulina, que ayuda a reducir la glucosa de la circulación.

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