NAVLE（北美执业兽医考题）Day 562

Q1:A stray dog is presented after being hit by a car.The dog has hypotonic forelimbs and spastic paresis in the hinds. All four limbs have proprioceptive deficits and sensation loss-signs are worse in the forelimbs. Where is the lesion?一只流浪狗汽车撞倒。他的前肢肌肉张力减退，后腿痉挛性麻痹。四肢都有本体感受缺失，丧失感觉 - 在前肢表现地更严重。那么病变在哪里？