Do humans have a body part that has never been seen before? According to this academic study, the answer is yes.
This jaw-dropping discovery focuses, fittingly enough, on the jaw, specifically the masseter: a muscle in the lower jaw that is essential for chewing. If one were to place fingers on one’s cheeks and clench their teeth, that would be the masseter tightening.
While our current scientific understanding of the human anatomy had, until now, known the masseter as having a deep layer and a superficial layer, this new study, published in the peer-reviewed academic journal Annals of Anatomy, has revealed the existence of a third layer in the middle.
The existence of a third layer was noted by the 38th edition of Gray’s Anatomy – the British anatomy reference book written in 1858 by Henry Gray, not the similarly named American medical drama series. However, this merely referenced an even older observation, made in the 1784 German text Grundriss der Physiologie für Vorlesungen.
However, it had never been properly identified, and whether it existed at all in humans wasn’t considered.
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SOURCE: The Jerusalem Post, Aaron Reich