Final answer:
The secretion of insulin in response to high blood glucose levels is called a humoral reflex, facilitated by a negative feedback loop, and is disrupted in individuals with Type 1 diabetes.
Step-by-step explanation:
The secretion of the hormone insulin in response to changes in blood glucose level is an example of a humoral reflex. The rise in blood glucose levels acts as a stimulus that initiates the release of insulin from the pancreas. This is part of a negative feedback loop in homeostasis, where the body works to bring the glucose level back to normal. Specifically, pancreatic beta cells detect the excess glucose in the bloodstream and respond by releasing insulin. This reduces blood glucose levels as cells, particularly in the muscles and liver, take up more glucose from the blood. If someone has Type 1 diabetes, like the character Laura mentioned, they are unable to produce insulin in response to the humoral stimulus of elevated blood glucose levels.