AP PSYCHOLOGY

Detailed explanation-1: -In negative feedback systems, a stimulus elicits the release of a substance; once the substance reaches a certain level, it sends a signal that stops further release of the substance. In this way, the concentration of hormones in blood is maintained within a narrow range.

Detailed explanation-2: -Glucagon. Glucagon is a hormone that works with other hormones and bodily functions to control glucose levels in the blood. It comes from alpha cells found in the pancreas and is closely related to insulin-secreting beta cells, making it a crucial component that keeps the body’s blood glucose levels stable.

Detailed explanation-3: -Through negative feedback, when the amount of a particular hormone in the blood reaches a certain level, the endocrine system sends signals that stop the release of that hormone. Negative feedback is an important way that the body maintains homeostasis.

Detailed explanation-4: -In endocrinology, permissiveness is a biochemical phenomenon in which the presence of one hormone is required in order for another hormone to exert its full effects on a target cell. Hormones can interact in permissive, synergistic, or antagonistic ways.

Detailed explanation-5: -When hormone levels reach a certain normal amount in the blood, the endocrine system has a built-in turnoff process. It is called negative feedback system .