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HomeHomework HelpbiologySleep and Biological Rhythms

Sleep and Biological Rhythms

The cyclical patterns of sleep and wakefulness that are regulated by internal biological clocks and influenced by external factors such as light and darkness, which can impact physical and mental health, including the sleep-wake cycle, circadian rhythms, and the different stages of sleep

beginner
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Biology
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Overview

Sleep is a vital process that allows our bodies and minds to recover and rejuvenate. It consists of various stages, including REM and non-REM sleep, each serving unique functions essential for health. Biological rhythms, particularly circadian rhythms, play a significant role in regulating our sleep...

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Key Terms

Circadian Rhythm
A natural internal process that regulates the sleep-wake cycle, roughly following a 24-hour cycle.

Example: The body’s temperature and hormone levels fluctuate throughout the day.

REM Sleep
A stage of sleep characterized by rapid eye movement, where most dreaming occurs.

Example: During REM sleep, the brain is very active, similar to when awake.

Non-REM Sleep
The stage of sleep that does not involve rapid eye movement, divided into three stages.

Example: Non-REM sleep is crucial for physical restoration.

Sleep Cycle
A complete progression through the stages of sleep, typically lasting about 90 minutes.

Example: An adult usually experiences 4-6 sleep cycles per night.

Sleep Hygiene
Practices that promote consistent, uninterrupted sleep.

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

Melatonin
A hormone that regulates sleep-wake cycles, produced in response to darkness.

Example: Melatonin levels rise in the evening, signaling the body to prepare for sleep.

Related Topics

Circadian Biology
Study of biological rhythms and their effects on living organisms.
intermediate
Neuroscience of Sleep
Exploration of how sleep affects brain function and health.
advanced
Psychology of Sleep
Understanding the psychological aspects of sleep and its disorders.
intermediate

Key Concepts

Circadian RhythmsSleep StagesSleep DisordersImpact of Light