Tomori Z, Lemáková S, Holécyová A
Physiol Bohemoslov. 1977;26(1):49-54.
Intrapleural pressure, the tracheal air flow and tidal volume were recorded simultaneously in pentobarbital-anaesthetized dogs and changes occurring in them during defensive reflexes elicited by mechanical stimulation of the mucosa of different parts of the respiratory tract were evaluated quantitatively. The results show that, in addition to coughing and sneezing provoked by inserting a nylon fibre into the tracheobronchial region, the larynx and the nose, further respiratory reflexes described in other mammals also appear in these animals. Mechanical stimulation of the epipharynx with a fine polyvinylchloride catheter, for instance, also produces in dogs an aspiration reflex characterized by sniff-like inspiratory efforts without subsequent active expiration. Touching the vocal folds, however, produces an expiration reflex consisting of expiratory efforts without preceding inspiratory effort. The character of all these reflexes is typical and closely resembles their character in cats. Stimulation of the various parts of the respiratory tract sometimes evokes an apnoeic reaction instead of typical respiratory defensive reflexes.
在戊巴比妥麻醉的犬中同时记录胸膜腔内压、气管气流和潮气量，并对呼吸道不同部位黏膜受到机械刺激引发防御反射时它们所发生的变化进行定量评估。结果表明，除了将尼龙纤维插入气管支气管区域、喉部和鼻部引发的咳嗽和打喷嚏外，这些动物还会出现其他哺乳动物中描述的进一步呼吸反射。例如，用一根细的聚氯乙烯导管机械刺激咽上部，也会使犬产生一种吸气反射，其特征为类似嗅吸的吸气动作，随后没有主动呼气。然而，触碰声带会产生一种呼气反射，由呼气动作组成，之前没有吸气动作。所有这些反射的特征都是典型的，与猫的反射特征非常相似。刺激呼吸道的各个部位有时会引发呼吸暂停反应，而不是典型的呼吸防御反射。
