Right Main Bronchus

Right Main Bronchus The structure indicated is the right main bronchus. The trachea divides into two main bronchi – the right main bronchus and the left main bronchus (also referred to as primary bronchi). The trachea divides at the level of the sternal angle and the point at which it bifurcates is known as the carina – a cartilaginous ridge which runs between the left and right main bronchi. The main bronchi then divide into smaller and smaller airways in the following sequence: Lobar bronchi (secondary bronchi) Segmental bronchi (tertiary bronchi) Bronchioles Terminal bronchioles Respiratory bronchioles Alveolar ducts Alveolar sacs …

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