One role of the pancreas is to help regulate blood glucose levels. Two types of cells in the pancreas, beta and alpha, serve as sensors to detect changes in blood glucose levels. High glucose levels cause beta cells to increase the amount of insulin given off by the pancreas. The insulin triggers body cells to take in glucose and the liver to store excess glucose as glycogen, decreasing the blood glucose level. On the other hand, low glucose blood levels trigger alpha cells to signal for glycogen to free up stored glucose from your liver, thus increasing the blood glucose level. (4 points) 1. What type of feedback mechanism is this, positive or negative? Explain your answer based on the description of the mechanism. Blood glucose levels change throughout the day. Explain what causes these changes and describe how these feedback cycles work together to maintain a dynamic homeostasis. III. Predict what will happen to this feedback mechanism and then to a person's body if the beta cells are destroyed by an autoimmune disease.

One role of the pancreas is to help regulate blood glucose levels. Two types of cells in the pancreas, beta and alpha, serve as sensors to detect changes in blood glucose levels. High glucose levels cause beta cells to increase the amount of insulin given off by the pancreas. The insulin triggers body cells to take in glucose and the liver to store excess glucose as glycogen, decreasing the blood glucose level. On the other hand, low glucose blood levels trigger alpha cells to signal for glycogen to free up stored glucose from your liver, thus increasing the blood glucose level. (4 points) 1. What type of feedback mechanism is this, positive or negative? Explain your answer based on the description of the mechanism. Blood glucose levels change throughout the day. Explain what causes these changes and describe how these feedback cycles work together to maintain a dynamic homeostasis. III. Predict what will happen to this feedback mechanism and then to a person's body if the beta cells are destroyed by an autoimmune disease.

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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