ANATOMY

Detailed explanation-1: -Blood clotting is a form of positive feedback. When there is tissue damage, platelets coalesce to that area and release a chemical that signals other platelets to also go to the damaged area.

Detailed explanation-2: -Positive Feedback Loop The direction is maintained, not changed, so this is positive feedback. Another example of positive feedback is uterine contractions during childbirth. The hormone oxytocin, made by the endocrine system, stimulates the contraction of the uterus.

Detailed explanation-3: -Blood Clotting When a wound causes bleeding, the body responds with a positive feedback loop to clot the blood and stop blood loss.

Detailed explanation-4: -Another example of negative feedback is the regulation of the blood calcium level. The parathyroid glands secrete parathyroid hormone, which regulates the level of calcium in the blood. If calcium decreases, the parathyroid glands sense the decrease and secrete more parathyroid hormone.