Tsirkadiaanstsüklid
Tsirkadiaanstsüklid are biological rhythms that occur with a period of approximately 24 hours. These endogenous rhythms are found in most living organisms, including plants, animals, and even bacteria. The term "circadian" comes from the Latin words "circa" meaning approximately and "dies" meaning day.
These internal biological clocks are synchronized with the external environment, primarily through light and darkness cycles.
In humans, circadian rhythms regulate a wide range of functions, including sleep-wake cycles, hormone release, body
The molecular mechanisms underlying circadian rhythms involve complex feedback loops of gene expression and protein activity.