Science Test, Quiz, Questions
It is suggested that you first watch our video on Human Skeletal system video by clicking here Human Skeletal System –Video for kids
Every time we walk, play soccer, or write, we use our bones. Without these key body parts, we wouldn't be able to stand, walk, run, or even sit. If we didn't not have bones, we would be like jellyfish as bones make up the framework of our bodies. This framework is called the skeleton.
Do you know, bones account for 14% of body total weight in an adult?
Our bones are made up of different kinds of minerals like calcium, phosphorus, sodium but calcium is the top mineral for bones.
You would be surprised to know that our blood is made inside the bones. It is made inside many of the bones, this part of the bones is called bone- marrow, it is very soft part of the bones.
Bones are growing, living & always changing parts of our bodies. Babies' have 300 bones, but by the time, they become adults, they have 206 bones! It is not that these bones are lost but few smaller bones combine together to make bigger bones.
In our back, we have our spine. It has 26 bones, these are like circles with wings on the sides and back. These bones are called the vertebrae
Do you know our heart & lungs have a protection from outside. This protection is provided by a cage like structure called rib-cage. This rib-cage is made up of bones. There are 12 pairs of ribs, each pair is attached to the spine at the back.
Our arm has 3 bones - the humerus in the upper part, the radius and the ulna in the lower art of the arm.
Do you know,more than 50% of bones in our body are found in our hands & our feet for example each hand has 19 bones! Similarly in our feet ,there are 52 bones .
The femur is the largest bone in our body and it is found in upper part of our leg. The smallest bone is located in the middle ear, it is called staples (or stirrup) bone ,it is only 2.8 millimeters long.
If you want to attempt test or want to learn more, watch our skeletal system video by clicking here Skeletal System Video