Many branches of the 3rd intercostal artery and tributaries of the vein ran upward between the pleura and periosteum to distribute to superior intercostal muscle.

• 第3肋间动脉、静脉有多个分支在胸膜与骨膜之间上行分布于上位肋间肌。实验获得满意效果，气管成型手术的犬与非手术犬一样正常活动。