gland) Produced in Hypothalamus, quick-childbirth, stimulates childbirth, example of positive feedback Fight or Flight: (Adrenal medulla, Epinephrine) The reaction by body’s sympathetic nervous system to emergencies. Insulin Shock: severe depletion of blood glucose levels Chapter 3a (V) Three lines of defence 1. Keep foreign organisms or molecules out of the body * Chemical & physical barriers 2. Attack ANY foreign organism, molecule or cancer cell inside the body…
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