Suprachiasmatic Nucleus (SCN)

The Suprachiasmatic Nucleus (SCN) is a tiny group of nerve cells located in the brain's hypothalamus, serving as the body's master internal clock. It helps regulate daily rhythms such as sleep-wake cycles, hormone release, and body temperature by receiving signals about light from the eyes. This information allows the SCN to synchronize bodily functions with the day-night cycle, maintaining consistent patterns even in the absence of external cues. Essentially, the SCN ensures our biological processes are aligned with the environment, supporting overall health and well-being.