Examlex
The left atrium passes ________ blood through the ________ valve to the right ventricle.
Delta Waves
Slow brainwaves primarily associated with deep sleep and the restorative stage of the sleep cycle.
Deep Sleep
Deep sleep, or slow-wave sleep, is a stage of sleep that is crucial for physical renewal, hormonal regulation, and growth.
REM Periods
Stages of sleep characterized by rapid eye movement, low muscle tone, and the propensity to dream.
Night
The period of darkness between sunset and sunrise during which there is a absence of visible sunlight.
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