Activity 4. Feedback Mechanism

GRATIL, Rovic Kien D. - Activity 4

GRATIL, Rovic Kien D. - Activity 4

by Rovic Kien Gratil -
Number of replies: 0

Give other examples of disturbances in the internal environment that can act as a stimulus to a feedback mechanism.

  • An example of disturbances in the internal environment that can act as a stimulus to a feedback mechanism is the maintenance of blood glucose levels in animals and humans. After eating, blood glucose levels increase. The neurological system detects this. When this is detected by specialized cells in the pancreas, the endocrine system releases the hormone insulin. Blood glucose levels drop as a result of insulin, as would be expected in a negative feedback system. However, if an animal does not eat at all and its blood glucose levels fall, another group of cells in the pancreas sense this and release the hormone glucagon, which raises glucose levels. The body will not produce insulin and the blood sugar level falls when an animal has not eaten in several hours. The pancreatic hormone glucagon instructs the liver to release glucose into the bloodstream by dissolving the glycogen stored in the body.

 

Resources:

https://opentextbc.ca/biology/chapter/14-3-homeostasis/