Friday, 19 September 2014

Human Anatomy-The Respiratory System

Getting back to human anatomy the last system we studied was the respiratory system.  

We started off at lunch with a bunch of grapes.  I explained to L how our lungs are like a bunch of grapes in that the stem looks like the bronchi to one lung, the smaller branches are like the bronchioles and the grapes are the air sacks or alveoli.

We played some fun games blowing a feather across the table using different strengths of breath and felt how we can breath low down taking big breaths.  We experimented with how big deep breaths can calm us down and relax us.
I then set up a game for L using bean bags as oxygen.  We wrote labels along our deck of mouth, lungs and muscles.  L had to grab a bean bag(oxygen) from the mouth-take a deep breath in and then run to the lungs and then to the bottom of the deck where the muscles were.  At the muscles she did jumping jacks until she was out of breath then she dropped her oxygen and had to run up to the mouth to get more.
This was a fun way to burn off some energy while learning about how our muscles need oxygen and the harder our body works the more oxygen it needs.

L added in the lungs using bubble wrap and straws for the trachea and bronchi.  She drew in the bronchioles in the lungs with a marker.

This was by far the coolest.  Making a human lung model.  Super easy to make.  We cut the end off a plastic bottle, cut the top off a balloon and attached it to the end.  We then attached another balloon to a straw and pushed it down into the bottle.  We sealed up the top with play dough.
L pulled down on the bottom ballon (diaphragm) and the balloon lung filled up with air!  
So simple yet effective.  It was eye opening seeing how really important our diaphragm is. It really doesn't get enough credit!

The last thing L did was an experiment using different age family members.  L recorded our breaths for a minute at rest and then again for after a minute of exercise.  She did this with a 2 year old, me, herself, daddy and granny.
What she found out is that younger people take more breathes in general and everyone takes more breaths after exercise.
She recorded all of her data in a double bar graph.

Next up the muscular system.....

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