Discuss the process of breathing or the respiratory system
• Air is inhaled through the mouth
and nose. Ask the students to take in a deep breath first through their mouths
and then through their noses to demonstrate this action.
• Once air is inhaled into the
mouth and nose, it travels down an air tube called the trachea.
• The trachea is connected to the
lungs. Air is carried to the lungs from the trachea to the lungs through two
branches called bronchi. These bronchi branch into smaller tubes called
bronchioles.At the end of the
bronchioles there are millions of smaller air sacs called alveoli.
• Alveoli or air sacs function to
exchange oxygen and carbon dioxide within the body.
• The air sacs are connected to
the bloodstream. The air sacs release the oxygen into the bloodstream.The air sacs transport the oxygen through the
bloodstream.The carbon dioxide in the
lungs travels back up the trachea and is exhaled with each breath.
• The diaphragm muscle beneath the
lungs helps push air in and out of the body
Review the breathing process as previously outlined above. Have
students recall the different steps.
Ask students about the affects of smoking on lungs.Explain that smoking can damage the
air sacs in lungs making it harder to breathe.Breathing becomes difficult for smokers because the air sacs in the
lungs are damaged and do not function properly. This means that smokers also
have a much harder time playing sports, singing, dancing and doing other
activities which require controlled breathing and endurance.Have the students complete the Air Sac
Game.The purpose of this game is to
provide students with a visual representation of how smoking tobacco products
damage the air sacs within the lungs making it more difficult to breathe.