Being Healthy

Being Healthy - Being Healthy Being Breathing and the lungs...

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Unformatted text preview: Being Healthy Being Breathing and the lungs Objectives & Outcomes Objectives Objective: Develop understanding of the Objective: structure of the lungs and gas exchange. structure Outcomes: Outcomes: All: Explain the process of breathing (4) Most: Describe the difference between inhaled and Most: exhaled air (5) exhaled Some: Describe how alveoli are adapted for their Some: purpose (6/7) purpose Extension: Describe how damaged alveoli can result Extension: in less gas exchange (7) in The Respiratory System The Gas exchange happens in the lungs. You have 2 lungs, situated in your upper You thorax / chest thorax Here, oxygen and carbon dioxide are Here, exchanged – oxygen is needed for life and carbon dioxide is got rid of when we breathe out. breathe How do we breathe? How Mouth Mouth Windpipe/trachea Windpipe/trachea bronchi bronchi bronchioles alveoli alveoli blood blood Inhalation (When we breathe in we inhale) Exhalation (When we breathe out we exhale) Exchanging gases Exchanging The Alveoli Oxygen makes its way into thousands of special air sacs collectively called the ALVEOLI. The outside of the alveoli is covered with tiny blood vessels. The Alveolus One of these alveoli is called the ALVEOLUS. This is where the oxygen is transferred into the blood and carbon dioxide moves out of the blood. If all these alveoli flattened and spread out onto the floor, they would cover an area the size of a tennis court! Comparing inhaled and exhaled air What are the big differences between inhaled and exhaled air? How could you test for these? Inhaled Air Exhaled Air Nitrogen (78%) Oxygen (20.71%) Carbon Dioxide (0.1%) Other Nitrogen (75.5%) Oxygen (14.6%) Carbon Dioxide (4%) Other There is another difference…… …… water vapour. Lets take a closer look (avi) Lets Backup of as wmv file avi avi wmv wmv Task 1: Task With a partner With Partner A – explain the process of breathing Partner in and what gases exchange in Partner B – explain the process of breathing Partner out and what gases exchange out Be prepared to share your answers with the Be class. class. Task 2 Task Label diagram of lungs and indicate where Label oxygen and carbon dioxide exchange in the lungs. the Plenary Plenary Objective: Develop understanding of the Objective: structure of the lungs and gas exchange. structure Outcomes: Outcomes: All: Explain the process of breathing (4) Most: Describe the difference between inhaled and Most: exhaled air (5) exhaled Some: Describe how alveoli are adapted for their Some: purpose (6/7) purpose Extension: Describe how damaged alveoli can result Extension: in less gas exchange (7) in This powerpoint was kindly donated to www.worldofteaching.com http://www.worldofteaching.com is home to over a thousand powerpoints submitted by teachers. This is a completely free site and requires no registration. Please visit and I hope it will help in your teaching. ...
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