The human body requires food, air and water. ... The ears and nose of humans continue to grow throughout the entire life. A human heart beats about 100000 times in a day, 36500000 times in a year and over a billion times in 30 years.
The Blood and Circulatory System
A typical person has around 4-5 litres of blood.
Why do we have blood?
What else does blood contain?
How does blood move around the body?
The blood is the transport system by which oxygen and nutrients reach the body's cells, and waste materials are carried away. HEART & BLOOD
The Digestive System
Food provides us with fuel to stay a live. From food we get the energy to work and play and the raw materials to build new cells. The food we eat needs to be broken down so that our bodies can use it to make energy. Food is broken down by our digestive system and then taken around our body by the circulatory system (the blood).
Food provides us with fuel to live, energy to work and play, and the raw materials to build new cells......MOUTH, STOMACH, INTESTINES, LIVER etc
Breathing and The Respiratory System
When we breathe, the body takes in the oxygen that it needs and removes the carbon dioxide that it doesn't need.
The respiratory system is the system of the body that deals with breathing. LUNGS
The Skeleton and Muscles
The Skeleton is the name given to the collection of bones that holds the our body up.
Our skeleton is very important to us. It does three major jobs.
The brain uses over a quarter of the oxygen used by the human body. More human brain facts.
Your heart beats around 100000 times a day, 36500000 times a year and over a billion times if you live beyond 30. More human heart facts.
Red blood cells carry oxygen around the body. They are created inside the bone marrow of your bones. More blood facts.
The colour of a humans skin is determined by the level of pigment melanin that the body produces. Those with small amounts of melanin have light skin while those with large amounts have dark skin. More skin facts.
Adult lungs have a surface area of around 70 square metres! More lung facts.
As well as having unique fingerprints, humans also have unique tongue prints.
The left side of your body is controlled by the right side of your brain while the right side of your body is controlled by the left side of your brain.