1. homeostasis 2. negative feedback loop 3. the hypothalamus 4. the body’s optimal temperature, which is 37 degrees C, or 98.6 F 5. humans are endothermic, which means they don’t completely rely on their environment for heat, unlike ectothermic organisms such as reptiles. the diagram shows that the brain is in control of the body’s temperature, and that the body can raise its own temperature in its blood. or something like that, hope this helped
