Thermoregulation is the process by which living organisms maintain their internal body temperature within a certain range, despite external temperature changes. This is crucial for proper functioning of enzymes and metabolic processes. Animals can be classified as endotherms, which generate their own heat, or ectotherms, which rely on external sources to regulate their temperature. In humans, thermoregulation involves mechanisms such as sweating, shivering, and altering blood flow to the skin. The hypothalamus, a part of the brain, plays a key role in detecting temperature changes and initiating appropriate responses to maintain homeostasis.