Tag: TED-Ed

FUNCTIONS OF THE LIVER in The Human Body

FUNCTIONS OF THE LIVER in The Human Body

FUNCTIONS OF THE LIVER IN THE HUMAN BODY The liver is a major organ in most vertebral species. It has many important functions, including regulating the chemical composition of blood and producing bile. Despite its importance, the liver is a delicate organ that can be nearly impossible to repair if

How do drugs affect the brain? – Sara Garofalo

How do drugs affect the brain? – Sara Garofalo

Most people will take a pill, receive an injection, or otherwise take some kind of medicine during their lives, but most of us don’t know anything about how these substances actually work. How can various compounds impact the way we physically feel, think, and even behave? For the most part,

How the food you eat affects your brain – Mia Nacamulli

How the food you eat affects your brain – Mia Nacamulli

Your Brain on Food If you sucked all of the moisture out of your brain and broke it down to its constituent nutritional content, what would it look like? Most of the weight of your dehydrated brain would come from fats, also known as lipids. In the remaining brain matter,

How do your kidneys work? – Emma Bryce

How do your kidneys work? – Emma Bryce

It’s a hot day, and you’ve just downed several glasses of water, one after the other. Behind the sudden urge that follows are two bean-shaped organs that work as fine-tuned internal sensors. They balance the amount of fluid in your body, detect waste in your blood, and know when to

How does cancer spread through the body? – Ivan Seah Yu Jun

How does cancer spread through the body? – Ivan Seah Yu Jun

The onset of cancer usually begins as a solitary tumor in a specific area of the body. If the tumor is not removed, cancer has the ability to spread to nearby organs, as well as places far away from the origin, such as the brain. So how does cancer move

The science of skin – Emma Bryce

The science of skin – Emma Bryce

Between you and the rest of the world lies an interface that makes up 16% of your physical weight. This is your skin, the largest organ in your body: laid out flat, it would cover close to 1.7 square meters of ground. Its purpose may seem obvious— to keep our

How do cigarettes affect the body? – Krishna Sudhir

How do cigarettes affect the body? – Krishna Sudhir

Cigarettes aren’t good for us. That’s hardly news–we’ve known about the dangers of smoking for decades. But how exactly do cigarettes harm us? Let’s look at what happens as their ingredients make their way through our bodies, and how we benefit physically when we finally give up smoking. With each

Vermicomposting: How worms can reduce our waste – Matthew Ross

Vermicomposting: How worms can reduce our waste – Matthew Ross

Think of all the food made in the world each year. Hard to picture? Then, imagine that you are all of humanity, and on a plate in front of you is the one lovely annual meal you make for yourself. You did all sorts of work putting that meal on

What is obesity? – Mia Nacamulli

What is obesity? – Mia Nacamulli

The most basic function of bodily fat is self-storage of food reserves. In prehistoric times, natural selection favored genotypes that could endure harsh conditions by stocking the most fat. With chronic malnutrition being the norm for most of human history, genetics evolved to favor fat storage. So when did body

What causes constipation? – Heba Shaheed

What causes constipation? – Heba Shaheed

Visiting the bathroom is part of the daily human experience. But occasionally, constipation strikes, a condition that causes a backup in your digestive system. The food you eat can take several days to exit your body. And for many, constipation can become chronic, meaning regularly passing lumpy hard stools accompanied