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Anatomy Pharynx, larynx and trachea and cranial nerves 3,4,6 2570e016

All are true regarding trachea EXCEPT?

A
Has C shaped cailages
B
Outer diameter is 2 cm
C
More than 20 hyaline cailages
D
Isthmus of thyroid gland lies at 2, 3 and 4th tracheal rings
High-Yield Explanation
Trachea Length - 10- 15cm Diameter - 2cm (males), 1.5cm (females) Upper end - at lower end of cricoid cailage. Lower end - sternal angle C6 - T6 (erect position in living person). Fibroelastic wall. Cailaginous skeleton suppoed by 16 - 20 C- Shaped rings. Lumen lined by ciliated pseudostratified columnar epithelium
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