Okuma AnlamaSoru #11112
The Biology of Circadian Rhythms
Circadian rhythms are 24-hour cycles that govern essential physiological processes in virtually all living organisms, from single-celled algae to humans. In mammals, the central pacemaker orchestrating these rhythms is the suprachiasmatic nucleus (SCN), located within the hypothalamus. The SCN relies heavily on photic signals received from specialized retinal ganglion cells to synchronize the body's internal clock with the external day-night cycle. This internal timing mechanism regulates core body temperature, hormone secretion such as melatonin and cortisol, and metabolic rate. Chronic disruption of circadian rhythms—common among shift workers and excessive nocturnal screen users—has been linked to elevated risks of obesity, cardiovascular disorders, and depression. Which of the following would be the most suitable title for this passage?
- A)How Retinal Diseases Cause Total Sleep Deprivation
- B)The Economic Consequences of Night Shift Employment
- C)The Complete History of Hypothalamic Brain Surgery
- D)Understanding Circadian Rhythms and Their Health Implications
- E)Melatonin Supplements and Athletic Performance
Cevabı ve çözümü göster
Doğru cevap: D) Understanding Circadian Rhythms and Their Health Implications
Çözüm: Parçanın en uygun başlığı sirkadiyen ritimlerin işleyişini ve sağlık üzerindeki etkilerini özetleyen D seçeneğidir. Doğru cevap D'dir.