Final answer:
The control system for blood sugar concentration is a negative feedback loop, where insulin and glucagon play key roles in maintaining glucose levels within a normal range.
Step-by-step explanation:
The closed-loop control system that corrects blood sugar concentration is called negative feedback inhibition. This system is essential for maintaining homeostasis within the body.
When blood glucose levels rise, pancreatic beta cells release insulin, which facilitates glucose uptake by cells and conversion to glycogen in the liver, thereby lowering the blood glucose level. Conversely, if blood glucose levels fall, pancreatic alpha cells release glucagon, prompting the release of glucose into the bloodstream, thus raising the glucose levels back to normal.