Which body system is responsible for temperature regulation?

The integumentary system is responsible for temperature regulation in the body primarily through the skin, sweat glands, and associated structures. The skin acts as a barrier and plays a significant role in thermoregulation by regulating heat loss. When the body temperature rises, sweat glands in the skin produce sweat, which cools the body as it evaporates. Conversely, when the body is cold, blood vessels in the skin constrict to minimize heat loss.

In addition to the skin and sweat glands, the integumentary system also includes hair follicles, which can trap air to provide insulation and contribute to temperature control. This system works in conjunction with other body systems, particularly the nervous system, which detects temperature changes and triggers appropriate responses to maintain homeostasis.

While the endocrine system can influence body temperature through hormones, such as those that regulate metabolism, the primary responsibility for direct temperature regulation lies with the integumentary system. The nervous system plays a role in signaling, but it is not the primary system responsible for the actual regulation and adjustment of temperature. Thus, the integumentary system is uniquely and directly involved in maintaining ideal body temperatures.