respiratory system notes pg 69. respiratory system you breathe in o 2 and breathe out co 2 glue the...
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Respiratory SystemNotes pg 69
Respiratory System• You breathe in O2 and breathe out CO2
• Glue the diagram into pg 68 and label:Nose & mouthEpiglottisLungTracheaBronchiAlveoliDiaphragmUse pg 972 to help you
Some important parts
• Epiglottis – covers your trachea when you swallow
• Diaphragm – muscle that controls breathing. Contracts to pull air in.
• Alveoli – Puts O2 into the blood stream and takes CO2 out.
• Draw this pic in your notes:
• The throat, trachea, and bronchi are lines with cilia (tiny hairs) that remove dust, pollution, and other particles that we breathe in.
• Too much pollution or smoke damages the cilia so they can’t clean out the lungs.
• Too much pollution or smoke damages the cilia so they can’t clean out the lungs.
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