A negative feedback loop is a system that works to resist change within the system in order to stay at a steady state known as homeostasis. One of the examples of a negative feedback loop is the human body's regulation of blood sugar. When blood sugar levels rise, the hormone insulin is released. Insulin forces cells to absorb the glucose from the bloodstream and also causes glucose to be converted to a different compound. Both of these things cause the glucose level in the blood to fall back to its normal, steady state (homeostasis). Also, in the event that the blood sugar level should below the steady state, other hormones are released that cause the glucose level to rise back to homeostasis. Below is a graph that shows the body's response to a dramatic increase in the blood's glucose level.
No comments:
Post a Comment