Emphysema Respiratory System influenza Bronchitis

Respiratory System Functions (Jobs) Get oxygen from environment Remove waste (carbon dioxide, water) Produce sound

Respiratory System O2 In CO2 Out Cellular Respiration Oxygen (O2) is needed by the cells in the body to stay alive and perform their specific jobs Glucose (sugar) is also used to release energy Carbon dioxide (CO2) and water (H2O) are created during this process and are waste products that must be removed O2 In CO2 Out

Check Yourself O2 In CO2 Out Cellular Respiration In two sentences, summarize cellular respiration. Try to write a formula for cellular respiration. O2 In CO2 Out

Respiratory System O2 In Gas Exchange (Inhale) Oxygen breathed into lungs (inhaled) Alveoli (air sacs) allow oxygen to move into blood stream Red blood cells carry oxygen to cells of body Oxygen moves into cells O2 In

Respiratory System CO2 Out Gas Exchange (Exhale) Carbon dioxide is removed from cells Red blood cells carry CO2 to lungs Alveoli allow carbon dioxide to leave blood stream Carbon dioxide is breathed out of lungs (exhaled) CO2 Out

Respiratory System Breathing The diaphragm is muscle that controls the movement of air in and out of lungs When diaphragm contracts, lungs expand and take in air When diaphragm relaxes, lungs contract and push out air Breathing Simulation

Respiratory System Other structures The nose warms air filters out particles and adds moisture The epiglottis blocks out food and liquids when you swallow The trachea directs air down to the lungs

Respiratory System Diseases Other Jobs Emphysema Asthma Alveoli within the lungs become swollen or destroyed preventing the effective exchange of oxygen & carbon dioxide. Asthma Disorder where the passageways in the lungs swell and become narrow making it difficult for the lungs to take in air Speaking/singing/whispering – air moves over vibrating vocal cords Exhale – removes extra moisture Coughing/sneezing – remove items from windpipe or lungs Sighing, Yawning, Hiccupping, Laughing, Crying