After millenniums of careful slicing and dicing, it might seem as though scientists have figured out human anatomy. A few dozen organs, a couple hundred bones and connective tissue to tie it all together.
But despite centuries of scrutiny, the body is still capable of surprising scientists.
A team of researchers in the Netherlands has discovered what may be a set of previously unidentified organs: a pair of large salivary glands, lurking in the nook where the nasal cavity meets the throat. If the findings are confirmed, this hidden wellspring of spit could mark the first identification of its kind in about three centuries.
Any modern anatomy book will show just three major types of salivary glands: one set near the ears, another below the jaw and another under the tongue. “Now, we think there is a fourth,” said Dr. Matthijs Valstar, a surgeon and researcher at the Netherlands Cancer Institute and an author on the study, published last month in the journal Radiotherapy and Oncology.
The study was small, and examined a limited patient population, said Dr. Valerie Fitzhugh, a pathologist at Rutgers University who wasn’t involved in the research. But “it seems like they may be onto something,” she said. “If it’s real, it could change the way we look at disease in this region.” [Continue reading…]