Tracheo bronchial tree

• Trachea

• Carina:

  • Trachea divides at the level of Loui's angle into right and left main bronchi.

• Right main stem bronchus

  • is short 2.5 cm in length and vertical

  • Right upper lobe bronchus takes off 2.5 cm. from the bifurcation of the trachea

    • RUL segments

      • Apical

      • Anterior

      • Posterior

  • Right intermediate bronchus

  • Right middle lobe bronchus takes off anteriorly

    • RML segments

      • Medial

      • Lateral

  • Right lower lobe bronchus  passes downward and backward

    • RLL segments

      • Superior takes off right across from RML psoteriorly

      • Medial, first branch off medially

      • Anterior

      • Posterior

      • Lateral

• Left main bronchus

  • 5 cm long Long and oblique

  • Passes below the level of the pulmonary artery before it divides

  • Left upper division

    • Left upper lobe

      • LUL segments

        • Apical posterior

        • Anterior

    • Lingula

      • Limgular segments

        • superior

        • Inferior

  • Left lower lobe

    • LL segments

      • Superior

      • Anteromedial

      • posterior

      • lateral