Names matter

These body parts have a proper name that most people don’t know about

Would you be able to confidently point at your pinna if asked? Or could you say how many canthi a person has? Each part of our body has a specific name—sometimes more than one—but we don’t always use them or even know them, especially if a popular version exists. The big toe, the bit of flesh between the index and the thumb, the space between the brows, all these have a proper name that is rarely used. Let’s discover the proper way to refer to some parts of our body.

We typically refer to the space beneath the shoulder as the armpit or underarm, but the technical name for it is axilla. The name comes from a diminutive form of the Latin ala, meaning ‘wing’ or ‘upper arm’, which would make the armpit the ‘little wing’.

This ‘little wing’ serves as a passageway for important nerves, blood vessels, and lymph nodes that supply our upper arm, making it a vulnerable spot but also very sensitive and ticklish, as our body instinctively tries to protect the area.

There is a reason why we call the top of the upper lip the "Cupid’s bow". The philtrum, or the vertical groove that goes from the button of the nose to the lip, is named after the Greek word phíltron, meaning ‘love spell or charm’.

This area was once considered to possess a special beauty, and the philtrum was the path where Cupid's love arrows would land. Anatomically, its role in humans is debated; while some researchers consider it a leftover from our evolutionary past with little remaining function, others have proposed it may still play minor roles, such as in upper lip mobility. In other mammals, it's more clearly tied to the sense of smell, helping direct scent molecules toward specialized olfactory organs.

How do you refer to the space between your eyebrows? While most of us say "the space between the eyebrows", the correct name is glabella, a Latin word meaning ‘smooth’ or ‘hairless’.

The origin of the name is quite straightforward: while many mammals have "eyebrows", their brow bones are protruding and are often completely covered in fur. In humans, the brow bone is flat and smooth, and the area between the brows is typically hairless.

No one really knows how the bit of skin between the thumb and the index finger came to be called purlicue. Some say that it is a combination of the Scots pirlie (‘curl’) and the French cue (‘tail’)

This term was first used for squiggly writing or for the decorative flourish at the end of a word, but etymologists still can’t explain how it came to be used for the curve of the hand.

The term ‘ear’ encompasses both the outer and inner parts of the ear, but each component has its own name. Pinna, meaning ‘wing’, is the proper name of the visible ear, sometimes also called auricle, including both the cartilaginous and the fleshy part.

Although the inner ear is mainly responsible for converting sound into electrical signals and sending them to our brain, the pinna acts like a funnel that amplifies the sound vibrations and directs them into the ear canal.

We have specific names for every finger, but what about the toes? The names for the toes mirror those of the fingers (index, middle, ring, pinky), except the big toe, which is called the hallux, after the Medieval Latin hallex, meaning ‘great toe’.

However, this scientific name still has a connection with the thumb, as linguists believe that the spelling of hallux was influenced by the Latin word pollex, meaning ‘thumb’.

Several parts of the human body have a frenum (or frenulum), or a small band of tissue that restricts a mobile organ, such as the one connecting the underside of the tongue with the mouth.

This name comes from the Latin frenum, meaning ‘rein’ or ‘bridle’, equating the way tissue anchors and restricts the movement of the organ to how a rein directs and controls an animal.

If you thought that the corners of our eyes didn’t have a proper name, you are in for a surprise. The spot where the upper and lower lids meet —both inner and outer— is called canthus (canthi in plural), after the Greek kanthós, meaning ‘angle’ or ‘corner’.

Over the inner canthus, some people have a skin fold, called epicanthus (‘above the canthus’) or epicanthic fold. The shape of this fold —influenced by genetics, age, or medical conditions— often results in the upper lid being partially or completely hidden when the eye is open.

We often call it the cheekbone, but the proper name for it is zygoma, meaning ‘yoke’ or ‘bolt’ in Greek. Why was this name chosen? This bone acts like a bridge or yoke that connects the facial bones with the skull.

The scientific name for this bone is quite old, dating back to the 2nd century and to famous physicians such as Galen, who were the first to compare the cheekbone with a yoke. However, the term entered the English language only in the late 17th century.

Our nose has two nares or nostrils, separated by a strip of skin. Have you ever wondered if that small piece had a name? Well, it does, and it’s called columella, a diminutive form of the Latin columna (‘column’ or ‘pillar '), reflecting how the strip of nasal tissue stands like a column between the nostrils.

This word entered English in the 16th century, but it wasn’t only used to describe the human nose. Instead, it was adopted by many scientific fields to describe different structures that resembled a column.

Is there a clear distinction between the chin and the point of the chin? We often call the point of the chin just ‘chin’, but it's actually called the gnathion, derived from the Greek gnathos (‘jaw’ or ‘mouth’).

Gnathion is the diminutive form of gnathos, and could be translated as ‘little chin’. While anatomically, ‘chin’ describes the entire forward part of the lower jaw, the term gnathion refers to the pointiest part of it.

The 12 longest-living animals on Earth (and how they cheat time)

Nature doesn’t just create beauty, it crafts survival miracles. While most animals have short lives, a rare few have mastered the art of staying alive for centuries, even millennia. These aren’t just long-lived creatures; they’re nature’s ultimate time travelers. From the frozen depths of the oceans to the darkest corners underground, they’ve developed bizarre, brilliant strategies to cheat death. Get ready to meet 12 animals whose lifespans will absolutely blow your mind.

Record age: up to 15,000 years

This unassuming sea sponge thrives in the freezing waters of Antarctica, where temperatures hover around 28.6 °F—so cold that biological processes hit the brakes. In such icy conditions, metabolism slows to a crawl, allowing these sponges to live for thousands of years.

Some have reached impressive sizes of over 3 feet tall and have been around since mammoths were still thundering across the tundra. They don’t move, they don’t stress, and they barely change, just quietly existing while centuries pass them by. Their secret to extreme longevity? Glacial patience, deep-sea stillness, and a lifestyle that redefines "low-maintenance".

Age: technically… infinite

This tiny jellyfish, no bigger than a fingernail—less than 0.2 inches—is like the ocean’s very own Benjamin Button. What makes it truly extraordinary is its ability to rewind its life story, flipping back to a youthful, juvenile stage whenever it wants. While it’s not completely invincible (predators and other threats are still very real), if left undisturbed, it can keep hitting the reset button on aging indefinitely, making it one of the most fascinating "time-benders" in nature.

Record age: 507 years

In 2006, a special clam was discovered buried deep in the seabeds of the North Atlantic. Scientists were able to determine that it had been there since at least 1499—that’s centuries before the United States was even a thought! This ancient marvel, nicknamed "Ming", was able to perfect a slow-and-steady approach to life. Growing at a snail’s pace and barely budging, Ming’s sedentary lifestyle turned out to be a brilliant strategy for beating the clock. Who knew doing almost nothing could be the ultimate secret to longevity?

Record age: estimated 392 years

These sharks aren’t your average ocean cruisers—they can stretch over 20 feet long and weigh up to 2,200 pounds. But what’s really mindblowing is how slowly they move, like they’re in a permanent state of deep relaxation. Living in the icy Arctic waters, these giants don’t hit adulthood until they’re about 150 years old, and some can glide through the depths for nearly 400 years. Imagine that! These ancient swimmers were already around before America declared independence... and they are still out there, silently roaming the seas!

Record age: over 211 years

This whale is a true ocean giant, stretching up to 60 feet long and weighing a staggering 200,000 pounds. But what makes it stand out isn’t just its size but its age. Some of these majestic creatures carry harpoons from the 1800s still lodged in their skin, like walking history books. Just picture living so long that you’re literally carrying outdated technology embedded in your body—talk about being a time traveler of the seas!

Record age: 200 years

Spanning the chilly Pacific coastline from California all the way up to Alaska, this spiky little ball—about 7 inches across—is full of surprises. It munches on algae and calls the deep, dark ocean its home, thriving at depths of up to 300 feet. Don’t let its size fool you: this prickly creature is a true elder of the cold seas, quietly outliving many ocean neighbors while keeping a low profile. A tough, slow-living veteran wrapped in spikes!

Record age: 226 years

Meet Hanako, a legendary Japanese koi who swam through life for an astonishing 226 years. Scientists discovered how old she was by studying the rings on her scales, much like counting the growth rings of a tree. These colorful, ornamental fish aren’t just symbols of good fortune; they’re also secret long-lifers with the potential to celebrate over two centuries of birthdays, as long as they get the right care and a peaceful pond to call home.

Record age: 190 years

Jonathan is a male tortoise living on the remote island of Saint Helena in the South Atlantic Ocean. He was born back in 1832, and he’s still happily chomping lettuce and soaking up the sun today. Weighing in at more than 400 pounds and measuring around 3 feet long, Jonathan holds the title of the oldest known living land animal on the planet. If he could share tales, they’d span nearly two centuries of history. Imagine that!

Record age: 152 years

This ancient-looking fish, with its whisker-like barbels, looking like a tiny underwater submarine, prowls the lakes of North America. It can reach an impressive length of up to 7 feet and weigh around 200 pounds. These slow-living creatures don’t rush into adulthood—they start breeding only around age 20—and then take their time cruising through life at a leisurely pace. Believe it or not, one legendary catch in Wisconsin was estimated to be over 150 years old!

Record age: over 90 years

This chunky, night-loving parrot from New Zealand is a true oddball—it can’t fly, snores like a grumpy grandpa, and smells like fresh flowers. Despite its quirks, this bird boasts an impressively long lifespan. Sadly, it teeters on the edge of extinction. The oldest known kakapo, affectionately named Richard Henry, lived 90 years, earning him the title of the charmingly eccentric elder statesman of the avian world.

Record age: 37 years

This tiny, kooky rodent—barely 3 inches long and just over an ounce in weight—could’ve been cast straight from a sci-fi apocalypse flick. Dwelling in vast underground colonies across Africa, it’s practically invincible to cancer, pain, and the usual effects of aging. Scientists are fascinated by this little marvel, even if it’s not winning beauty contests anytime soon. Its superpowers make it a star in longevity research!

Record age: estimated 100+ years

Lobsters have a totally different rulebook than us when it comes to aging. They don’t really grow old; they just keep getting bigger and bigger. Some giant lobsters weigh over 40 pounds and stretch beyond 3 feet long. Their biggest threats? Not old age, but predators or the risky process of shedding their shells. In theory, they could live forever if left alone—but let’s be honest, not many get to enjoy a peaceful, lobster-sized retirement!