Which glands excrete lactic acid, urea, and water?

The sudoriferous glands, commonly known as sweat glands, are responsible for excreting lactic acid, urea, and water through the process of sweating. These glands play a crucial role in thermoregulation and waste excretion. When the body temperature rises or during physical exertion, sudoriferous glands produce sweat, which is composed mainly of water but also contains other substances, such as electrolytes, urea, and lactic acid. This sweat is then released onto the skin surface, where it evaporates and helps cool the body.

The other types of glands mentioned do not perform this specific function. Sebaceous glands, for example, primarily secrete sebum, an oily substance that helps lubricate and protect the skin. Apocrine glands, while also a type of sweat gland, are primarily associated with the secretion of a thicker, milky fluid that can contain proteins and fat, rather than directly excreting lactic acid and urea in significant amounts. Endocrine glands primarily release hormones into the bloodstream and are not involved in the excretion of bodily wastes like lactic acid and urea. Therefore, sudoriferous glands are the correct answer for excreting lactic acid, urea