Tuesday, September 2, 2014

Homeostasis Questions

What is homeostasis?
It indicates a dynamic state of equilibrium or a balance in which internal conditions vary, but always within relatively narrow limits. Our body is just running smoothly in easier terms.
What are some examples of homeostasis?
Some examples of homeostasis are when our blood pressure is on good number and our glucose isn't to high or to low.
What are negative feedback and positive feedback?
So negative feedback mechanism is when it shuts off the original stimulus or reduces it intensity. The mechanisms cause the variable to change in a direction opposite to that of the initial change, returning it to its ideal value.  The output shuts off the original stimulus for example the regulation of blood glucose levels.
Then positive feedback is the result or response enhances the original stimulus so that the activity is accelerated. Its positive because the changer that occurs proceeds in the same direction as the initial disturbance, causing the variable to deviate further and to negative feedback controls. The output enhances or exaggerates the original stimulus. An example is regulation of blood clotting.

No comments:

Post a Comment