Don’t Hold Your Breath! Objective: To learn the structure and function of the Respiratory System Bell Work: How are respiration and cellular respiration.

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Don’t Hold Your Breath! Objective: To learn the structure and function of the Respiratory System Bell Work: How are respiration and cellular respiration related? Respiration is the process of taking in oxygen and releasing carbon dioxide. Cellular respiration uses the oxygen in the body to break down glucose and create energy in the form of ATP as well as the byproducts water and carbon dioxide. © 2014 Getting Nerdy, LLC

Function: Exchange oxygen and carbon dioxide with the external environment and your internal environment © 2014 Getting Nerdy, LLC

Consists of: Nose and Mouth: passageway into respiratory system that helps to warm air Pharynx (Throat): transports air, food, and water, includes parts of the trachea and esophagus 1 2 © 2014 Getting Nerdy, LLC dirty gerdy smelly mellie gnllc

Larynx (Voice Box): vocal cords are stretched across larynx opening Trachea (Wind Pipe): carries air from larynx to lungs. Covered in cartilage for protection 3 4 © 2014 Getting Nerdy, LLC

Bronchi/Bronchial tubes: two tubes split off from trachea - one tube goes to each lung. Each tube splits into tiny tubes called (#7) bronchioles) 5 7 © 2014 Getting Nerdy, LLC

CO2 Blood from Body to Lungs O2 Blood Out from Lungs to Body Alveoli (Air Sacks): tiny sacks in (#8) lungs are surrounded by capillaries (oxygen enters bloodstream and carbon dioxide exits). Mouth 6 Alveoli CO2 Blood from Body to Lungs O2 Blood Out from Lungs to Body O2 IN CO2 OUT Red Blood Cell Carbon Dioxide Molecule Oxygen Molecule © 2014 Getting Nerdy, LLC

Each lung has thousands of alveoli, making the breathable surface area of the lung the size of a tennis court! 8 © 2014 Getting Nerdy, LLC

Breathing and Respiration Respiration: Body obtains and uses oxygen and removes carbon dioxide & water Two parts to respiration: Breathing: Inhale - Diaphragm - muscle moves down/lungs expand Exhale - Air moves out automatically Cellular respiration: chemical reaction that uses oxygen to release energy from food. © 2014 Getting Nerdy, LLC

Don’t Hold Your Breath! Objective: To compare the amount of air taken in during various breathing exercises. Background: Lung Capacity is the amount of air contained within the lungs during various breathing activities. It can be measured in several ways: TOTAL LUNG CAPACITY is the amount of air in the lungs after a very deep inhalation. This would include vital and residual capacities. RESIDUAL LUNG CAPACITY is any air left in the lungs after a deep exhalation. Even after you breathe out everything in your lungs, there is still some air in there! VITAL LUNG CAPACITY is the amount of air you can forcibly exhale in a single breath. So after inhaling as much air as possible, vital capacity would be measured by blowing it all out until you can blow no more. TIDAL LUNG CAPACITY is the amount of air you breathe normally. This is not a deep breath, but the type of breathing you would do if you were reading a book or washing the dishes. © 2014 Getting Nerdy, LLC

Don’t Hold Your Breath! What You Do: Stretch out your balloon by pulling it several times. - Measure your Tidal Capacity (Normal Breath) In order to do this, take a normal breath in. Place the balloon to your lips and exhale a normal breath into the balloon. DO NOT force the air into the balloon. Pinch the open end of the balloon and place the balloon on the table. Holding the balloon, measure the diameter of the balloon with the ruler. Record your information in the chart below. Release the air and complete steps 1-5 four more times. - Measure your Vital Capacity (BIG breath) In order to do this, take a DEEP breath in. Place the balloon to your lips and exhale as much breath as you can into the balloon. Force as much air as you can into the balloon. Repeat steps 2-3 from above. © 2014 Getting Nerdy, LLC