What function do sweat glands have in addition to temperature regulation?

Sweat glands primarily play a crucial role in regulating the body's temperature by secreting sweat. When the body's internal temperature rises, whether due to physical activity or environmental heat, sweat is produced. As this sweat evaporates from the skin surface, it helps cool the body down, maintaining thermal homeostasis. While sweat primarily serves to cool the body, it also has other beneficial functions.

The secretion itself contains water, electrolytes, and some trace substances, which can help in other physiological processes, such as excreting small amounts of waste. However, the main function of producing sweat aligns with temperature control, making it the most relevant answer regarding additional functions beyond basic regulation. The other options provided do not directly align with the functions of sweat glands, as they relate to different physiological processes or organ systems entirely.