This school year we are focusing on living things. Evey has decided that we should start with human beings – mostly because we bought a model that comes apart and she likes to play with the organs. What a psychologist might make of that I don’t know but in the meantime I am harnessing her fascination and researching the human body with her. The first part of the model to go together is the skeleton and here are 9 fun facts we discovered while we research human bones:
- The hyoid bone in the throat is one of the few bones that is not connected to another
- An average adult human weighs more than six times the weight of its skeleton.
- Babies are born with around 300 bones. As you grow up many of the bones, such as those in the skull, fuse together so that most adults have 206 bones.
- Your hands and feet contain more than half of the bones in your body. There are 27 bones in each foot and 26 in each hand.
- Your spine is made up of 33 bones.
- The heaviest bone in your body is the femur (the thighbone). It is also the longest.
- A cube of bone that is 1/2 inch on each side would be able to support 1,733kg – the same weight as an adult hippopotamus.
- Bones are light because they are not solid. Inside they look a bit like honeycomb.
- The spaces in the bone are filled with a jelly like substance called marrow. Marrow in certain bones is responsible for the formation of red blood cells.
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