The concept of 'circadian rhythm' refers to the internal biological clock that regulates the sleep-wake cycle and other physiological processes over a 24-hour period. Recent research has revealed that this rhythm is not solely controlled by the suprachiasmatic nucleus in the brain, but also by peripheral clocks in organs such as the liver and muscles. These peripheral clocks can be influenced by feeding patterns, exercise, and temperature, independent of light cues. Disruption of circadian rhythms, often caused by shift work or jet lag, has been linked to metabolic disorders, cardiovascular diseases, and even cognitive decline. Understanding the interplay between central and peripheral clocks is crucial for developing interventions to mitigate these health risks.
❓ Согласно тексту, какое из следующих утверждений о циркадных ритмах является верным?
A. A. Они регулируются исключительно супрахиазматическим ядром в головном мозге.
B. B. Периферические часы не подвержены влиянию внешних факторов, таких как питание и температура.
C. C. Нарушения циркадных ритмов могут способствовать развитию метаболических и сердечно-сосудистых проблем.
D. D. Свет — единственный внешний сигнал, который влияет на все биологические часы.
✅ 正确答案
C. Disruptions in circadian rhythms may contribute to metabolic and cardiovascular problems.
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