Problem: Describe the differences between positive and negative feedback systems. "Infant suckling triggers sensors in the areola, which send a nerve impulse to the brain. The brain releases the hormone oxytocin from the hypothalamus and anterior pituitary. Oxytocin triggers myoepithelial cells in alveoli of the mammary glands to squeeze milk into the lactiferous ducts. The more the baby suckles, the more milk is released and the more milk the body will produce." Please read the given scenario and Identify the following: 1. Receptor 2. Control Center 3. Effector