Today students worked in groups to build a model of a lung. Below are some of the key points we learned during this activity:
When the diaphragm contracts (flattens/pulls down), air is pulled into the lungs. When it relaxes, air is expelled from the lungs.
There are thousands of bronchioles in the lungs, at the end of these are small air sacks called aveoli. Gas exchange happens at these aveoli.
Homework: Make an observations/patterns/explanations table for the respiratory system. This should be a new page in your notebook and go directly behind the orange 'o/p/e' table in your notebook.
We will be using this table for an experiment tomorrow.
No comments:
Post a Comment