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Respiratory System (4)
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The structure of the human respiratory system (11)
Intercostal muscles
The structure of the human respiratory system (12)
Bronchus
The structure of the human respiratory system (13)
Larynx
Direction of air in breathing mechanism
Nostrils > Nasal cavity > Pharynx > Larynx > Trachea > Bronchus > Bronchiole > Alveolus
Mechanism of inhalation (1)
When you inhale, intercostal muscles contract and pull the rib cage upwards and outwards
Mechanism of inhalation (2)
Diaphragm muscles contract and pull the diaphragm to descend and become flat
Mechanism of inhalation (3)
Movements of the rib cage and diaphragm make the thoracic cavity bigger and cause air pressure in the thoracic cavity to decrease
Mechanism of inhalation (4)
The higher air pressure outside forces air to enter the lungs
The action of epiglottis during swallowing of bolus
Epiglottis drops down and closes the trachea when a bolus is swallowed into the esophagus
The action of epiglottis during breathing
Epiglottis moves up causing the trachea to open
The views expressed in the flashcard here are those of the contributor and don’t necessarily represent the views of pandai
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Respiratory System (4)
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