简述食管的三个生理性狭窄及其临床意义。
下列传染病的传染途径 ["流行性脑脊髓膜炎()流行性乙型脑炎()霍乱()A.飞沫传播","B.注射传播","C.虫媒传播","D.食物传播","E.水型传播"]
霍乱的并发症是()中毒性菌痢的并发症是()伤寒的并发症是()阿米巴痢疾的并发症是() ["A.肝脓肿","B.呼吸循环衰竭","C.肠穿孔","D.脱水、电解质紊乱","E.肺脓肿"]
Laimer三角
流行性脑脊髓膜炎(败血症期)()中毒性痢疾合并脑病()高热惊厥()病毒性脑膜炎() ["A.脑膜刺激征阳性","B.皮肤有出血点","C.呕吐、脓血便","D.惊厥停止后神志即恢复正常","E.肢体瘫痪"]
呼吸周期