动物实验证明,喉部受体能帮助调节喉部肌肉的活动,在低大气压自然呼吸的动物,吸气时上呼吸道肌肉活动增强,切断或麻醉喉上神经能大大减弱这种反射。为了解人在清醒时喉受体如何影响上呼吸道张力,作者在正常人喉部麻醉前后进行肺功能试验观察。方法研究对象21人,分3组:①组9人喉部行局部麻醉;②组10人以等渗盐水代替局部麻醉;③组2人在不同天内分别进行①组和②组的方法观察。喉 Animal experiments have shown that laryngeal receptors can help regulate laryngeal muscle activity. Animals that breathe naturally at low atmospheric pressure have increased upper respiratory muscle activity during inhalation and severely attenuate this reflex by cutting or anesthetizing the laryngeal nerve. To understand how the laryngeal receptor affects upper airway tension during wakefulness, the authors observed pulmonary function tests before and after laryngeal anesthesia in normal subjects. METHODS: Twenty-one subjects were divided into three groups: group (n = 9) with local laryngeal anesthesia; group (n = 10) with isotonic saline instead of local anesthesia; group (n = 2) were observed in groups ① and ② on different days. throat