Your system for breathing Respiratory System Your system for breathing

Nose

Nose Function: Evidence: Inhales Oxygen (O2) and Exhales Carbon Dioxide (CO2) Uses nose hair (Cilia) to filter dust and germs from entering the lungs Moistens the air Warms air Evidence: Sneezing Boogers Nose Hair (cilia)

Mouth

Mouth Function: Evidence: Allows more air to come into the body Exercise and out of breath = breathe through your mouth Sick and nose is clogged = breathe through your mouth

Trachea

Trachea Function: Evidence: Brings Oxygen from nose/mouth to the lungs and removes Carbon Dioxide Lined with cartilage to keep it open and protect it. Evidence: X-Ray Tracheotomy

Larynx

Larynx Function: Evidence: Air vibrates the vocal cords to make noise (talking) Voice box Evidence: Put two fingers on voice box and hear and feel it vibrate

Diaphragm

Diaphragm Function: Evidence: A muscle that moves up to force air out of the lungs when you exhale Contracts and moves down to let extra space in when you inhale Evidence: Lung model Big deep breathe Video from station 1

Epiglottis

Epiglottis Function: Evidence: Small flap that covers the trachea when you swallow so food does not get into your lungs Evidence: X-ray video Coughing when something goes down the wrong pipe

Pharynx

Pharynx Function: It is your throat Lets air go down to your trachea You also swallow food and water with Evidence: Picture Sore throat

Bronchi

Bronchi Function: Evidence: Bronchitis Animation video station 1 Tubes to take O2 to alveoli and remove CO2 from alveoli to exhale Evidence: Bronchitis Animation video station 1

Alveoli

Alveoli

Alveoli Function: Small sacs that send oxygen (O2) to the cells and removes carbon dioxide (CO2) from cells. Where gas exchange takes place. Evidence: Animation Class demonstration

Lung

Lung Function: Contains the bronchi and alveoli Protects these structures. Evidence: Microscope/Stereoscope slides Video from station 1