Missouri Barber Practice Exam

Sweat glands are responsible for producing and secreting sweat onto the skin's surface. This sweat helps regulate our body temperature, but it also serves as a way to eliminate waste products, such as urea and excess salts. While sweat does contain some water, it is not the primary function of sweat glands to eliminate excess water. Blood cells are not eliminated through sweat, and sebum is produced by sebaceous glands and not sweat glands. Therefore, the correct answer is B as it is the only option that accurately reflects the function of sweat glands.