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Larynx -
Thyroid
cartilage
Cricoid
cartilage
Trachealis muscle
Anular
ligament
Tracheal
cartilage
Esophagus
Lumen of trachea
Trachea
Canna
Left primary bronchus
Right
primary
bronchus
T rachea
Pseudostratified ciliated columnar epithelium
C*shaped cartilag
(b) Cross section