Sympathetic innervation at the apex of the cat's canine tooth; a quantitative analysis

Brian R Noga, G. R. Holland

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Superior cervical ganglia were removed unilaterally from 6 adult cats. 2 animals were sacrified at 2, 4 and 7 d and the innervation of the canine apex examined quantitatively. The number of non-myelinated axons was lower on the operated side 4 and 7 d after sympathectomy. The number of degenerating axons was always greatest on the operated side and highest 2 d after operation. By combining the proportion of axons lost with those in the process of degenerating it is estimated that between 4.8 and 12.5% of the axons (52-88 axons) entering the apex of the cat's canine are sympathetic. Degenerating axons were often within the same Schwann cell as intact, presumably sensory, axons and were sometimes in contact with them. This contact may be anatomical basis for the modulation of nociceptive input by sympathetic activity.

Original languageEnglish
Pages (from-to)137-148
Number of pages12
JournalAnatomischer Anzeiger
Volume153
Issue number2
StatePublished - Jan 1 1983
Externally publishedYes

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Cuspid
Axons
Cats
Canidae
Superior Cervical Ganglion
Sympathectomy
Schwann Cells

ASJC Scopus subject areas

  • Anatomy

Cite this

Sympathetic innervation at the apex of the cat's canine tooth; a quantitative analysis. / Noga, Brian R; Holland, G. R.

In: Anatomischer Anzeiger, Vol. 153, No. 2, 01.01.1983, p. 137-148.

Research output: Contribution to journalArticle

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