Homeostasis: Negative Feedback, Body Temperature, Blood Glucose

Homeostasis feedback system respond to a decreased external temperature?

How should our body respond to a decreased body temperature

Your body begins to shiver. These are small muscle movements that require energy. As chemical bonds are broken through respiration, heat is produced. You may also get goosebumps. This is because of the muscle contractions.

Why do cells need glucose? Describe the homeostatic feedback system that would be activated in response to an elevated blood glucose level?

Glucose is the main source of energy for cells. Cells break down glucose to create ATP. Glucose is circulated through the body by the blood. During this circulation, the body regulates the amount of glucose to ensure a constant homeostatic state. Glucose rates may rise during digestion after eating and may fall during transport or through waste (urine). In order to keep a homeostatic state, the pancreas uses two hormones, insulin, and glucagon. If glucose levels are too high, the pancreas excretes insulin to regulate the levels. If glucose is too low, the pancreas excretes glucagon. An elevated blood glucose level would cause the pancreas to release insulin. Insulin encourages cells to accelerate their transport of glucose from the blood. It also accelerates the creation of fat from glucose in the liver and fat cells.

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