And it's 'anatomically distinct.' 🧐 engineering
A team of researchers led by senior lecturer Dr. Szilvia Mezey from the Department of Biomedicine at the University of Basel and Professor Jens Christoph Türp from the University Center for Dental Medicine Basel has discovered a new part in the human body, a deep third layer of muscle in the masseter muscle, a muscle which is critical for chewing.
The Modern Anatomy textbook describes only two layers of the masseter. The muscle has two layers one deep and one superficial layer.
"This deep section of the masseter muscle is clearly distinguishable from the two other layers in terms of its course and function," Mezey, the first author of the research,."Although it's generally assumed that anatomical research in the last 100 years has left no stone unturned, our finding is a bit like zoologists discovering a new species of vertebrate," adds senior author Türp in the same statement.
This deep section of the masseter muscle is clearly distinguishable from the two other layers in terms of its course and function. Based on the arrangement of the muscle fibers, the muscle layer likely helps stabilize the lower jaw by"elevating and retracting" the coronoid process, the team wrote in their report. And in fact, the newfound muscle layer is the only part of the masseter that can pull the jawbone backward, Mezey said.
It may feel kind of weird to see the discovery of a new organ or muscle that was unknown when you think of the years you spent on anatomy lessons, but these occasions are not that rare. As recent as last year, anStay on top of the latest engineering news
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