Human Body

The human body is an amazing structure made up of many fascinating parts and systems. Learn about the human body and how its systems work together.

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Many Animals Have a Cloaca, But Humans Should Not

It's the organ commonly found in animals where multiple body systems come together into one opening for both defecation and reproduction. But in humans, having a cloaca causes huge problems.

Why Breathing Through Your Nose Is Best

We've probably all been breathing wrong our entire lives. Why is that? Experts suggest we should focus on breathing through our noses and most of us don't.

What Is the Rarest Blood Type in the World?

There are eight major blood types and some are more common than others. But what's the rarest of them all?

Talk May Be Cheap, but the Larynx Makes It Possible

The human voice, including both pitch and volume, is created here as air travels through the vocal cords, but it can change based on the position of the tongue, lips, mouth and pharynx.

What's the Best Way to Stop a Nosebleed?

Getting a bloody nose is nasty and can be also be pretty scary if you can't stop it. So what's the fastest — and safest — way to get your nose to stop bleeding?

Get to Know Proprioception, Your Silent Sixth Sense

Proprioception refers to our ability to perceive our body's position and how we move through space. It's often considered our sixth sense because we do it without thinking about it.

Do Blue Light Glasses Even Work?

Blue light glasses are super popular these days. But do they work the way marketers promise?

What's the Difference Between the Fibula and Tibia?

You probably remember the jingle from kindergarten...the shin bone's connected to the, wait, what bone is it?

The Golgi Apparatus Acts Like a Mail Room for Eukaryotic Cells

The Golgi apparatus is the mail room of the cell, packaging up proteins from the endoplasmic reticulum and sending them to their final destinations.

Aphantasia: When Your Mind's Eye Is Blank

Although the inability to picture things in your head would seem to be a hinderance, some experts say it's definitely not a creativity killer and actually can have some advantages.

What Does It Mean If Your Blood Oxygen Level Is Low?

A low oxygen level in your blood is a good indicator of a COVID-19 infection, but what exactly does that mean and how do doctors test for it?

What You Should Know About Antibody Testing

We're all hearing the words 'antibody' and 'antibody testing' way more than we ever thought we would in the normal course of a day, so what exactly are we talking about?

Cytokine Storms: When Your Immune System Defends You to Death

Cytokine storm syndrome can turn a normally functioning immune system into an enemy more dangerous than the virus it's trying to dispatch.

Farts Can Be Silent, But Can They Be Deadly, Too?

Maybe you've never even thought about it when you've smelled — or emitted — a particularly odoriferous fart. But can that fart spread disease?

Why Can't You Smell Your Own House?

You almost never notice the way your own place smells. Why is that?

This Is What Happens When You Work at a Desk for 20 Years

'Emma' is the hard-to-ignore embodiment of what years behind a desk could do to your body. She's hunched over, has bad skin and even varicose veins. Don't become Emma.

The Cerebellum Is the Body's Little Brain

The cerebellum is the part of our brain that controls voluntary movements like posture, balance, coordination and speech.

Feeling Hungry? Tired? Moody? Thank Your Hypothalamus

The hypothalamus is a tiny area of your brain that keeps everything — hunger, thirst, sleep, energy, mood — in balance.

Does Oxytocin Make Us Fall in Love?

Sometimes referred to as the "cuddle hormone," oxytocin is released during sex and breastfeeding. But does it make you fall in love with someone or just bond you more with someone you already love?

Without a Hippocampus, Your Long-term Memory Is History

Located in the temporal lobe, this tiny horseshoe-shaped organ plays a massive role in both the storage of long-term memories and the creation of new ones.

5 Ways Homeostasis Keeps Your Body Humming Along

Homeostasis comes from the Greek words for "similar" and "steady" but this state of steadiness is anything but boring. In fact, it's what you want your body to be.

The Amygdala: Gatekeeper of Human Fear

The amygdala is a small part of the human brain that most humans have probably never heard of.

Toilet Stools, Like Squatty Potty, Really Get Things Moving, Study Says

A new study found that giving your feet a boost in the bathroom lessened constipation (and straining) significantly.

Scientists Grow Human Blood Vessels in Lab

The groundbreaking innovation could mean major advances in treating people with diabetes and other vascular diseases.

5 Reasons to Blow Your Nose Gently

It seems pretty safe to blow the old honker, doesn't it? Well, think again.