What Does That Dangly Thing in the Back of Your Throat Do?

iStock
iStock

Uvula image via Shutterstock

The uvula is one of the weirdest looking features of the human body. Yet despite its infamy, scientists have spent centuries puzzling over its function.

The hangy ball's full name is the “palatine uvula,” referring to its location on your soft palate. Not to be confused with the uvula vermis, a lobe of the cerebellum, or the uvula vesicae, in the urinary bladder. 

Through history, scientists have had many theories about the uvula. Among them:

That it once helped guide the flow of food and water, and, in humans, was a mere remnant from previous mammals who had to lean down to eat and drink.
*
That it induces the gag reflex. And therefore isn’t the best place to get a piercing.
*
That it contributed to “chronic cough.” A problem that 19th-century doctors treated with a “simple” “clipping” procedure.
*
That it contributes to cardiovascular problems like sudden infant death syndrome (SIDS) and sleep apnea.

Even today, some doctors treat sleep apnea by having the uvula removed. Unpleasant as that sounds, much of the recent uvular research has come about by studying uvulopalatopharyngoplasty patients (uvula-less people). Several such studies have concluded that the uvula is really good at excreting saliva. A lot of saliva, in a really short amount of time. Another study compared the soft palates of eight different mammals, and found that a small, underdeveloped uvula was found in only two baboons.

Don’t Leave Us Hanging

So what does the dangly throat thing do? Because the uvula is basically unique to humans, scientists basically agree that it primarily serves as an accessory to speech. You know what it’s like to have your throat go dry before talking to a large group? The uvula is there to provide the proper lubrication for complicated human speech. In time, we’ll likely learn that the uvula does some other cool things to boot, but to quote one study on the subject, it “may be another marker of human evolution that differentiates man from other mammals.” For now, that’s pretty cool.

This post originally appeared in 2012.

Celebrate the Holidays With the 2020 Harry Potter Funko Pop Advent Calendar

Funko
Funko

Though the main book series and movie franchise are long over, the Wizarding World of Harry Potter remains in the spotlight as one of the most popular properties in pop-culture. The folks at Funko definitely know this, and every year the company releases a new Advent calendar based on the popular series so fans can count down to the holidays with their favorite characters.

SIGN UP TODAY: Get exclusive deals, product news, reviews and more with the Mental Floss Smart Shopping Newsletter!

Right now, you can pre-order the 2020 edition of Funko's popular Harry Potter Advent calendar, and if you do it through Amazon, you'll even get it on sale for 33 percent off, bringing the price down from $60 to just $40.

Funko Pop!/Amazon

Over the course of the holiday season, the Advent calendar allows you to count down the days until Christmas, starting on December 1, by opening one of the tiny, numbered doors on the appropriate day. Each door is filled with a surprise Pocket Pop! figurine—but outside of the trio of Harry, Hermione, and Ron, the company isn't revealing who you'll be getting just yet.

Calendars will start shipping on October 15, but if you want a head start, go to Amazon to pre-order yours at a discount.

This article contains affiliate links to products selected by our editors. Mental Floss may receive a commission for purchases made through these links.

100 Fascinating Facts About Earth

The best Spaceball.
The best Spaceball.
NASA

Did you know that there’s a place in the South Pacific Ocean called Point Nemo that’s farther from land than any other point on Earth? So far, in fact, that the closest humans are usually astronauts aboard the International Space Station. (And by the way: The map you’re about to look for Point Nemo on might not be entirely accurate; a certain amount of distortion occurs when trying to depict a 3D planet on a 2D surface.)

In this all-new episode of The List Show, Mental Floss editor-in-chief Erin McCarthy is journeying to the center of the Earth, and visiting its oceans, its atmosphere, and even space, in search of 100 facts about our endlessly fascinating planet.

The subjects that fall under the umbrella of “facts about Earth” are nearly as expansive as Earth itself. Geology, biology, astronomy, and cartography, are all fair game—and those are just a few of the many -ologies, -onomies, and -ographies you’ll learn about below. 

Press play to find out more Earth-shattering facts, and subscribe to the Mental Floss YouTube channel for more fact-filled videos here.