• The body is made up of millions of cells which we cannot see with a naked eye.
• Special cells combine together to make an organ.
• An organ is a complex structure within the body. It performs special function/s.
• A body system consists of a number of organs which work together.
Figure 1: Organization of a body system
Introduction to body systems:
• The system which is responsible for transporting nutrients and other substances to different parts of the body is: Circulatory systemRead More...
• Every person has a skeleton made up of bones.
• These bones give shape to our body, let us move in many ways, and protect our internal organs.
• The skeletal system is the framework of bones that give support to our body.
What are bones made of?
• If you've ever seen a real skeleton or fossil in a museum, you might think that all bones are dead.
Figure 10: Dinosaur fossil in a museum
• Although bones in museums are dry, hard, or crumbly, the bones in our body are different.Read More...
• The nervous system controls the different organs of our body.
• The brain is the control centre of entire body.
• It may also be called the human computer.
• The brain not only controls what we think and feel, but also how we learn and remember, and the way we move and talk.
Figure 27: Nervous system
• The brain controls many other things such as the beating of heart, the digestion of food, and yes, even the stress we feel.
Figure 28: Human brainRead More...
SOME INTERESTING FACTS
• Our brain keeps on growing until we are about 20 years old.
• Our brain has around 100 billion nerve cells.
• The left side of our brain is usually better at problem solving, maths and writing.
• The front of the human brain is larger than any other animal's, even the dinosaur's.
• The right side of the brain is creative and helps us to be good at art or music.
• The brain stores all sorts of things in the memory including facts and figures and all the smells, tastes and things we have seen, heard or touched.Read More...