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The pineal gland is often considered one of the least known organs in the human body. It is a small gland located in the brain that produces melatonin, which helps regulate sleep patterns and circadian rhythms. Despite its importance, it is not as widely recognized as other organs like the heart or lungs.
Water is the most common molecular subsance found in the human body(~98%). and phosphorous is the most abundant element in human body.
The most prevalent metal in the human body is calcium. It is an essential mineral that plays a key role in bone health, muscle function, and nerve signaling.
The most abundant atom in the human body is hydrogen, which makes up about 61% of the atoms in the body.
The specific most common name for the study of the human body is anatomy.