1. Define homeostasis and give an example of you how your body maintains a constant internal temperature.

Homeostasis refers to the ability of an organism or cell to maintain a constant internal environment, even when external conditions change. This is achieved through a series of physiological processes that work to keep the internal environment within a narrow range, allowing the organism to function optimally.One example of how the human body maintains a constant internal temperature is through the regulation of blood flow. When the body is exposed to cold temperatures, the blood vessels in the skin constrict, reducing blood flow to the skin and extremities. This helps to conserve heat and maintain a stable internal temperature. Conversely, when the body is exposed to hot temperatures, the blood vessels in the skin dilate, increasing blood flow to the skin and extremities. This helps to dissipate heat and prevent overheating.Another example of how the body maintains a constant internal temperature is through the regulation of sweating. When the body is exposed to hot temperatures or during physical activity, the sweat glands produce sweat, which evaporates from the skin surface, cooling the body down.Overall, the body has several mechanisms to maintain a constant internal temperature, including the regulation of blood flow, sweating, shivering, and metabolic rate. These mechanisms work together to ensure that the body's internal environment remains stable, allowing for optimal functioning.