Examlex
White blood cells are produced in the
Parathyroid Glands
Small endocrine glands in the neck that produce parathyroid hormone, which regulates calcium levels in the blood and bone.
Pineal Gland
A small endocrine gland in the brain that produces the hormone melatonin, involved in regulating sleep-wake cycles.
Melatonin
A hormone secreted by the pineal gland that plays a role in setting circadian rhythms.
Biological Rhythms
Natural processes that cyclically change over a period of time in living organisms, such as the circadian rhythm or menstrual cycle.
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