posterior ethmoidal artery

例句：

1. 1. The posteriorethmoidal artery is responsible forsupplying blood to the brain.
   后筛动脉负责向大脑供血。
2. 2. In somecases, this artery may be blocked, causing headaches.
   在某些情况下，这条动脉可能会被阻塞，导致头痛。
3. 3. Doctors often use angiography to diagnoseand treat conditions involving the posterior ethmoidal artery.
   医生经常使用血管造影来诊断和治疗涉及后筛动脉的情况。