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.
❓ 本文によると、概日リズムについて正しい記述は次のうちどれですか？
A. A. それらは脳内の視交叉上核によってのみ調節されている。
B. B. 末梢時計は、摂食や温度などの外部要因の影響を受けない。
C. C. 概日リズムの乱れは、代謝および心血管系の問題に寄与する可能性がある。
D. D. 光は、すべての生物時計に影響を与える唯一の環境的手がかりである。
✅ 正确答案
C. Disruptions in circadian rhythms may contribute to metabolic and cardiovascular problems.
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