Correct Answer - A Ans. is '13' i.e., T4 Trachea bifurcates | Anatomy embryology histology videos & books

Correct Answer - A
Ans. is '13' i.e., T4
Trachea bifurcates at carina, at the level of lower border of T4 or
T⁵ disc space.

Structure Cervico thoracic level
Tracheal bifurcation T4-T5

Arch of aorta Begins and ends at T4

Xiphoid process T9

Splenic axis Along 10th rib

Carotid bifurcation, Hyoid bone C3

Upper border of thyroid cartilage C4

Level of cricoids cartilage C6

Lumbar level
Celiac trunk T12 - L I
Superior mesenteric artery Ll
Transpyloric plane Lower border of Ll

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