It arises above the level of the pulmonary artery, and for this reason is named the eparterial bronchus.
2.
About 2 cm from its commencement it gives off a branch to the superior lobe of the right lung, which is also called the eparterial bronchus . " Eparterial " refers to its position above the right pulmonary artery.
3.
The "'eparterial bronchus "'( "'right superior lobar bronchus "') is a branch of the right main bronchus given off about 2.5 cm from the bifurcation of the trachea.
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