Respiratory System Role Of Air Passages In The Nose
This series looks at the structure and function of the respiratory system and describes Air is drawn in via the nostrils or external nares and enters the large nasal Any obstruction of the nasal passages and surrounding sinuses, for example .The Act of Breathing. Breathing starts at the nose and mouth. You inhale air into your nose or mouth, and it travels down the back of your throat and into your windpipe, or trachea. As the bronchial tubes pass through the lungs, they divide into smaller air passages called bronchioles..
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Bronchus Wikipedia
A bronchus is a passage of airway in the respiratory system that conducts air into the lungs.The first bronchi to branch from the trachea are the right main bronchus and the left main bronchus. These are the widest and enter the lungs at each hilum, where they branch into narrower secondary bronchi known as lobar bronchi, and these branch into narrower tertiary bronchi known as segmental bronchi..