Examlex
Which is the action of histamine?
Melatonin
A hormone produced by the pineal gland that regulates sleep-wake cycles, often used as a dietary supplement to aid sleep.
Physical Activity
Any movement of the body that requires energy expenditure, including everyday activities, exercise, and sports.
Sleep Cycles
Sleep cycles refer to the patterns of movement through different stages of sleep, including REM (rapid eye movement) and non-REM stages, which repeat approximately every 90 minutes in a typical night's sleep.
Monophasic Pattern
In the context of hormonal cycles, a pattern characterized by a constant dosage of hormones, typically seen in certain types of birth control pills.
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