1. Draw block diagrams to represent the following feedback control systems: a) Control of human skin temperature by sweating b) Control of a diabetic person's blood sugar level through insulin injections Note: Besides the standard feedback control system components, include disturbances in the diagram. Label each block and signal with their physical names. Briefly explain how each system works.

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Stress

Stress is defined as the feeling of being overwhelmed or unable to cope with emotional or mental pressure. Any event or action that makes a person annoyed, furious, or nervous can trigger it. Chemical changes in the body caused by stress can cause blood pressure, blood sugar levels, and heart rate to rise.