Examlex
Which of the following hydrogen isotopes is radioactive?
RAS
Acronym for the Reticular Activating System, a network of neurons located in the brainstem that regulates wakefulness and sleep-wake transitions.
Sleep-Wake Cycle
The circadian rhythm that regulates periods of sleepiness and wakefulness throughout a 24-hour period.
Narcolepsy
A rare condition with symptoms that can include sleep paralysis and cataplexy.
Insomnia
A sleep disorder characterized by trouble falling asleep, staying asleep, or experiencing restorative sleep, leading to daytime dysfunction.
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