Respiratory System
Presentation
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Science
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6th Grade
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Easy
Standards-aligned
Arnel Data
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12 Slides • 1 Question
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Respiratory System
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Multiple Choice
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What are the parts of the Human Respiratory system
•Trachea
•Bronchi
•Bronchioles
•Alveoli
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How does Respiratory System Work?
•During inspiration (inhalation), the diaphragm and intercostal muscles contract.•During exhalation, these muscles relax. The diaphragm domes upwards.
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The Alveoli
•The alveoli are moist, thin-walled pockets which are the site of gas exchange.
•A slightly oily surfactant prevents the alveolar walls from collapsing and sticking together.
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The Gas Circulation
•Recall the interconnection between circulation and the respiratory system.
•Gas exchange at the lungs and in the body cells moves oxygen into cells and carbon dioxide out.
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What happens when you breath in?
The rib muscles relax.
The diaphragm contracts.
Air leaves the alveoli.
Air moves between the chest wall and the lung.
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Respiratory System
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