Not Signed In - Pictures
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A The respiratory system provides oxygen for the blood and eliminates carbon dioxide B Pathway of air 1 Nasal cavity and oral cavity 2 Pharynx
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poo that we breathe in This waste is so light it floats up into the air and in it goes to our lungs throat nasal cavity and so on UGH This can cause an allergic reaction in some people resulting in blocked nose sneezing poor breathing itchy eyes itchy throat sore throat and asthma STAMP OUT DUSTMITES TODAY USING OUR AMAZING SAFE PRODUCT
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muscles relax This returns the thoracic cavity to it s original volume increasing the air pressure in the lungs and forcing the air out External Respiration When a breath is taken air passes in through the nostrils through the nasal passages into the pharynx through the larynx down the trachea into one of the main bronchi then
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it and carries it to all parts of the body At the same time the blood gives up carbon dioxide which is carried out of the lungs with air breathed out Upper Respiratory System The parts of the upper respiratory system are illustrated above The Nasal cavity or Nose is the preferred entrance for outside air to enter into the respiratory system The Oral
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diaphragm and intercostal muscles relax This returns the thoracic cavity to it s original volume increasing the air pressure in the lungs and forcing the air out External Respiration When a breath is taken air passes in through the nostrils through the nasal passages into the pharynx through the larynx down the trachea into one of the main bronchi then into smaller
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