Reflex of the Tracheobronchial Smooth Muscle to Nasal Mucosa Stimulation
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説明
In an attempt to reveal the reflex mechanism of the tracheobronchial smooth muscle to stimuli to the nasal and laryngeal mucosa, experiments were performed using dogs. The method employed consisted of mechanical plethysmography and measurement of total lower pulmonary resistance. The following results were obtained. 1. A clear reflex relationship exists between the nasal mucosa and the tracheobronchial muscle, and also between the laryngeal mucosa and the tracheobronchial muscle. 2. Stimulation of the nose, irrespective of its intensity, nature, or the site stimulated, always caused reflex dilatation of the tracheobronchial lumen, when the stimulus was above threshold level. Stimulation of the larynx caused reflex contraction of the tracheobronchial lumen, although on rare occasions it caused dilatation. 3. The degree of response to nasal and laryngeal stimulation depended greatly on the pre-stimulatory level of tonus of the tracheobronchial muscle. It was noted that the greater the response of the tracheobronchial muscle to laryngeal stimulation, the less is the response to nasal stimulation, and vice versa .
収録刊行物
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- Auris Nasus Larynx
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Auris Nasus Larynx 3 75-92, 1976-01-01
Elsevier BV