Transcript snc1l u2l7 respiratory system

Lesson 7
February 8th, 2011
 The respiratory system does its job every time you take
a breath.
 You Inhale or breath in air, which contains oxygen. The
blood delivers the oxygen to all the cells in your body.
Without oxygen, your body cells would die.
 You exhale or breathe out carbon dioxide. Carbon
dioxide is a waste product that your cells make but
cannot use.
Study the parts of the
respiratory system.
 The Windpipe is a tube for air at the front of your
throat. Colour it yellow
 The Lungs are your breathing organs. Colour them
red.
How does the respiratory
system work?
 This is what happens when you breathe.
 You inhale air through your nose or mouth
 The air flows through the windpipe
 The windpipe divides into two tubes that lead to the
lungs.
 Inside each lung, oxygen passes into the air and carbon
dioxide is breathed out.