Bevan RD, Tsuru H, Bevan JA.
Weights of matching right and left middle or posterior cerebral arteries and their main branches from the same animal were compared 8-10 weeks after unilateral denervation by superior cervical ganglionectomy. When compared in pairs, the denervated arterial systems weighed significantly less (mean 85%) than their innervated counterparts. This suggests that the sympathetic innervation exerts a trophic influence on extracerebral arteries.
PMID: 6362090 [PubMed - indexed for MedlineStroke. 1983 May-Jun;14(3):393-6.