论文部分内容阅读
1 乳鼠上消化道解剖生理特点 ①乳鼠(生后1周龄)体重约13±1.5g;②口腔粘膜幼嫩,易受损伤出血;③咽喉部神经反射差,自我调节保护能力差。药液溢出时极易呛入气管乃至肺致死。④食管长,胃的解剖位置低,常位于腹中部甚至腹下部。⑤胃内常常积满乳汁,加之胃贲门括约肌紧张度较低,易致药液外溢。
1 Anatomical and physiological characteristics of suckling upper gastrointestinal tract 1 suckling mice (1 week old after birth) weighing about 13 ± 1.5g; 2 young oral mucosa, vulnerable to damage bleeding; 3 poor throat reflex, poor self-regulatory protection. When the liquid spills, it can easily enter the trachea and even let the lungs die. 4 The esophageal length, the anatomical position of the stomach is low, often located in the middle of the abdomen or even the lower abdomen. 5 The stomach is often full of milk, and the stomach sphincter has low tension, which easily leads to liquid spillage.