The Respiratory System By Mrs. Cas Alldred 2007 Primary Function • Supply the blood with oxygen and to take away the waste product of cellscarbon dioxide. Path of air • Respire- to breathe • Expire- , let out air, or death • Expiration date- not any good Mouth & Nose Pharynx Larynx Trachea Trachea’s Job • Filter the air • Cilia- hair like projections in the liner of the trachea. • Secrete mucus- helps trap air particles • Warms the air before it enters the lungs Bronchi Bronchiole Tubes Lungs Lung’s job • Oxygen is taken into the blood • Carbon Dioxide is exhaled. Alveoli Diaphragm Smoker’s lung vs. healthy lung Emphysema Respiratory System Cool facts • * Your lungs contain almost 1500 miles of airways and over 300 million alveoli. • * Every minute you breathe in 13 pints of air. • * Plants are our partners in breathing. We breathe in air, use the oxygen in it, and release carbon dioxide. Plants take in carbon dioxide and release oxygen. Thank goodness! Asthma How are all these pictures related? Answer these questions • Why is respiration important for your cells? • Where does cellular respiration take place? • Why does smoking affect the amount of oxygen your cells are acquiring?