What Is the Respiratory System? When we breathe, the respiratory system takes in oxygen and sends out carbon dioxide. The cells in our bodies need fresh oxygen to stay alive. As cells do their jobs, ...

Everybody knows that some organs in the human body are necessary for survival: you need your brain, your heart, your lungs, your kidneys... KIDNEYS? Absolutely. Even though you won't find a ...

Your eyes see, but how does vision happen? Find out how the eyes and brain work together in this eye video.

Fainting (or "passing out") is a temporary loss of consciousness that usually happens because not enough blood is going to the brain due to a drop in blood pressure. Blood pressure can drop from ...

What's the Urinary System? And What's Pee? You drink, you pee. But urine is more than just that drink you had a few hours ago. If you've ever wondered where pee comes from, this movie has the answers!

Say hello to Chloe and Nurb and let them take you on a tour of the human body. You'll find out how the body's organs work and learn about body systems like the digestive system and brain and nervous ...

What Does the Heart Do? The heart is a pump, usually beating about 60 to 100 times per minute. With each heartbeat, the heart sends blood throughout our bodies, carrying oxygen to every cell. After ...

If you ever ate so much at Thanksgiving that you felt uncomfortable, you know what it feels like to overeat. It's not unusual to overeat from time to time. Most people do. But binge eating is ...

How much do you know about the urinary system, which makes pee? Find out by taking this quiz!

What Is an Umbilical Hernia? An umbilical hernia happens when part of a child's intestines bulges through the abdominal wall inside the belly button. It shows up as a bump under the belly button. The ...

What Is Diabetes? Diabetes happens when the body can't use glucose normally. Glucose is a type of sugar that comes from the food we eat. It's the main source of energy for all the body's cells.

Babies are born with protection against some diseases because their mothers pass antibodies (proteins made by the body to fight disease) to them before birth. Breastfed babies continue to get more ...