Which of the following glands is NOT involved in temperature regulation?

The pituitary gland is primarily responsible for regulating various hormones in the body and is often referred to as the "master gland." It plays a crucial role in controlling endocrine functions, including growth, metabolism, and reproductive processes, but it does not directly participate in the thermoregulatory process.

In contrast, the eccrine glands are involved in temperature regulation as they secrete sweat directly onto the skin surface, aiding in cooling the body through evaporation. The apocrine glands, while mainly associated with scent and activated during stress, can also contribute to temperature regulation indirectly through their sweat production. The thyroid gland, on the other hand, regulates metabolic rate and plays a role in thermogenesis, influencing body temperature.

Therefore, since the pituitary gland does not have a direct role in temperature regulation, it is correctly identified as the one not involved in this process.