What is one of the three major functions of eccrine glands?

• A. Oil secretion
• B. Water retention
• C. Regulation of body temperature
• D. Hair follicle nourishment

Answer: (C)

Eccrine glands play a vital role in the body's ability to regulate temperature through perspiration. These glands, which are found all over the body but are most numerous on the palms of the hands, soles of the feet, and forehead, secrete a clear, odorless fluid primarily composed of water and salt. When the body's internal temperature rises due to heat, exercise, or stress, the eccrine glands produce sweat that is released onto the surface of the skin. As this sweat evaporates, it cools the skin and helps to lower the body's overall temperature.

This mechanism is crucial for maintaining homeostasis, especially in conditions where overheating is a concern. The other functions mentioned, such as oil secretion, water retention, and hair follicle nourishment, are associated with other types of glands or physiological functions but do not represent the primary role of eccrine glands.