There may be two (36%) or three (46%) segmentalarteries supplying the right upper lobe.
分布于右肺上叶的动脉可有二个支（36%），也可有三个支（46%）。
2
Variations in the number, origin and distribution of the apical and lower segmentalarteries have been described.
顶、下段动脉的数目、起源和分布范围常有变化。
3
OBJECTIVE To investigate the different stages of pregnancy-induced hypertension in pregnant women with renal disease associated with renal segmentalarteries (SRA) hemodynamic changes.