Like all vertebrates, humans have a bony skeleton underneath their skin and muscles. It is a framework to hold up the body, help it move, and protect what is inside. The amazing brain makes humans the cleverest of all the animals. That includes you!
Thinking
The brain controls the body, sorting out information from the world around you and sending out instructions. It also stores memories.
Pumping
With each beat, the heart pumps blood around the body, delivering nutrients and oxygen to every part.
Breathing
Lungs bring air into the body through breathing. This air contains oxygen, which is needed to keep the body alive.
Eating
The body needs food to survive. The digestive system breaks food down, keeping the nutrients and getting rid of the waste.
Strong muscles
Muscles are like elastic straps that can stretch or squeeze. Many muscles move the body by pulling on the bones.
Standing tall
Unlike most animals, humans walk upright on two legs. This allows the arms to be used for other activities such as making things.
Body facts
- Human skeletons contain more than 200 bones. The smallest bone is inside the ear and in only 3 mm (3/25 in) long.
- The thigh bone is the strongest bone in the body. It is about four times stronger than concrete.
- A human heart beats more than 100,000 times in a day. That is over 35 million times in a year.
- In one day, blood travels about 19,000 km (12,000 miles) around the body.
Picture Credit : Google