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HomeHomework HelpbiologyCircadian Rhythms

Circadian Rhythms

Circadian rhythms are biological processes that follow a roughly 24-hour cycle, regulating various physiological and behavioral functions such as sleep-wake patterns, hormone release, and metabolism. This intrinsic timing mechanism is influenced by environmental cues, particularly light, and plays a crucial role in maintaining overall health and well-being.

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Biology
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Overview

Circadian rhythms are essential biological processes that regulate our sleep-wake cycles and other bodily functions over a 24-hour period. They are influenced by external factors like light and darkness, which help synchronize our internal clocks with the environment. Understanding these rhythms is ...

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Key Terms

Circadian Rhythm
A natural internal process that regulates the sleep-wake cycle.

Example: The body's circadian rhythm influences when we feel sleepy.

Biological Clock
An internal mechanism that controls the timing of biological processes.

Example: The biological clock helps regulate sleep patterns.

Suprachiasmatic Nucleus
A group of cells in the hypothalamus that controls circadian rhythms.

Example: The suprachiasmatic nucleus responds to light signals.

Melatonin
A hormone that regulates sleep-wake cycles.

Example: Melatonin levels rise in the evening to promote sleep.

Jet Lag
A temporary sleep disorder caused by travel across time zones.

Example: Jet lag can disrupt your circadian rhythm.

Sleep Hygiene
Practices that promote good sleep quality.

Example: Maintaining a regular sleep schedule is part of good sleep hygiene.

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Light and Health
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Key Concepts

biological clocksleep-wake cyclehormonal regulationlight exposure