1) Air is pushed out of the lungs a) Inhalation/Inspiration b) Exhalation/Expiration 2) Air pressure in the lungs decreases a) Inhalation/Inspiration b) Exhalation/Expiration 3) Air pressure in the lungs increases a) Inhalation/Inspiration b) Exhalation/Expiration 4) Chest expands a) Inhalation/Inspiration b) Exhalation/Expiration 5) Intercostal muscles relax a) Inhalation/Inspiration b) Exhalation/Expiration 6) Air is sucked through the nose where it is warmed and filtered a) Inhalation/Inspiration b) Exhalation/Expiration 7) Diaphragm relaxes, becomes dome shaped a) Inhalation/Inspiration b) Exhalation/Expiration 8) Chest becomes smaller a) Inhalation/Inspiration b) Exhalation/Expiration 9) Diaphragm contracts, pulled down and flattens a) Inhalation/Inspiration b) Exhalation/Expiration 10) Air goes down the trachea into the lungs a) Inhalation/Inspiration b) Exhalation/Expiration 11) Intercostal muscles contract a) Inhalation/Inspiration b) Exhalation/Expiration 12) Air travels up into the trachea a) Inhalation/Inspiration b) Exhalation/Expiration 13) Rib cage pulled upwards a) Inhalation/Inspiration b) Exhalation/Expiration 14) Rib cage lowers a) Inhalation/Inspiration b) Exhalation/Expiration

Respiratory system - Breathing process

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