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Human Anatomy and Physiology

Question1. Homeostasis refers to the process of maintaining a stable and constant internal environment that is maintained by resisting the change. Multiple mechanisms works in combination that assists in maintaining a set points.

It involves negative feedback loop that is characterized by the change in direction of the stimulus that results in the either increase or decrease of the stimulus. The example of negative feedback loop is that the blood sugar levels is best controlled by the negative feedback loop. When an individual intakes food, blood glucose level rises then in response to this rise the pancreas reacts by secreting insulin into the blood. The higher insulin levels causes the glucose to transport to cells. The glucose is stored as glycogen in liver cells thus dropping the level of glucose. As a response, the pancreas ceases to secrete insulin.

The positive feedback loop is when the direction of stimulus is main....