Page 2: Consider the following description of a feedback loo…
Page 2: Consider the following description of a feedback loop: After a meal that includes large numbers of carbohydrates, the body breaks down these carbohydrates primarily into glucose which is absorbed into the blood. This increases blood glucose concentration. Cells in the pancreatic islets known as Beta cells detect this increase in glucose concentration. The exact mechanism for this detection is complicated, but basically increased glucose concentration increases the ratio of ATP/ADP which ultimately increases calcium concentration in the beta cell. High calcium concentration leads to the secretion of insulin via exocytosis. Insulin travels through the blood to the liver. Insulin causes the liver to increase permeability of the liver cells to glucose and also triggers the synthesis of glycogen, which requires glucose. The net effect is a decrease in glucose concentration. 6. What is the effector in the above example 7. The above example is an example of a 8. Which of the following describes the Anatomical Position Position? 9. Which Cavity contains the urinary bladder 10. Which Cavity contains the Heart