Abstract
The sensory innervation of the cardiopulmonary reflexes to nasal application of capsaicin (CAPS), distilled water (DW) and l-menthol (LM) was studied in anesthetized dogs breathing through tracheostomy. A marked cardiopulmonary reflex was observed by CAPS and DW into the nasal cavity, while a prolongation of expiration was induced by LM. All these reflexes were significantly decreased by bilateral section of the posterior nasal nerve (PNN) and completely abolished by topical nasal anesthesia with lidocaine. Responses of the whole nerve activity of the PNN to these substances corresponded to the magnitude of the reflexes. These results indicate that PNN afferents play an important role on the reflex elicitation of the noxious, water and cold stimuli from the nasal cavity.
Original language | English |
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Pages (from-to) | 85-88 |
Number of pages | 4 |
Journal | Journal of Veterinary Medical Science |
Volume | 61 |
Issue number | 1 |
DOIs | |
Publication status | Published - 1999 Jan |
Externally published | Yes |
Keywords
- Canine
- Control of breathing
- Trigeminal nerve afferent
ASJC Scopus subject areas
- veterinary(all)