Which anterior pituitary hormone is involved in stress response?

The hormone involved in the stress response that is released by the anterior pituitary gland is adrenocorticotropic hormone (ACTH). This hormone plays a critical role in the body's reaction to stress by stimulating the adrenal glands to produce cortisol, a key stress hormone. When stress is perceived, the hypothalamus signals the anterior pituitary to release ACTH, which then travels through the bloodstream to the adrenal glands. There, it prompts the release of cortisol, which helps the body manage stress by increasing energy availability, modulating immune responses, and regulating metabolism.

Cortisol is often referred to as the "stress hormone" because it helps the body respond to challenging situations. It can increase blood sugar levels, enhance brain function, and suppress non-essential functions to prioritize immediate survival responses.

The other hormones listed have different roles in the body. Thyrotropin (thyroid-stimulating hormone) is primarily involved in regulating metabolism through the stimulation of the thyroid gland. Prolactin plays a central role in milk production and reproductive functions. Luteinizing hormone is primarily involved in regulating the reproductive system, including ovulation and testosterone production. Therefore, ACTH is the specific hormone linked to the stress response.