Discover another unknown part of the human body
Byrne: Scientists in Switzerland have discovered a body part in the human jaw muscle that we did not know about before today.
This newly discovered part of the human body is the third layer of the ‘masseter muscle’ which is located at a considerable depth within the other two upper layers.
Explain that the role of this ‘jaw muscle’ is very important in moving the jaw and especially in chewing. So far we have known only two layers of this muscle, but Dr. Sylvia Meze of the University of Basel and her colleagues have discovered another, third layer beneath these layers.
Details of his discovery have been published online in the latest issue of the Annals of Anatomy.
“In fact, there are already some things in the historical medical record about the third layer of the jaw muscle, but they are very vague and largely incorrect,” said Dr. Meze.
To verify this, University of Basel experts recovered 12 human bodies from a government morgue that were specially preserved.
After decapitating all the bodies, a detailed examination of their jaws was done with the help of CT scan and later MRI which proved the hypothesis of third layer in the jaw muscle.
For further verification, they examined the living volunteers, who not only proved the existence of this third and inner layer, but also understood its purpose.
Considering the location and structure of this layer, experts have suggested that in addition to balancing the lower jaw, it also helps to lift it up and pull it back.
“Over the last 100 years, we have learned so much about the human anatomy that the chances of learning anything new were slim. Discovering a new part of the body is like discovering a new species of vertebrate, “said Dr. Christopher Thorpe, one of Dr. Sylvia Meese’s colleagues.