The “richness” of sympathetic innervation a comparison of cerebral and extracerebral blood vessels

The number of adrenergic nerves was quantified, on both cerebral and femoral blood vessels. No difference was found between the two vascular beds. The data failed to establish a “richer” innervation of cerebral vessels. This is in agreement with my previous, extensive, subjective and unpublished impression. Consequently, the suggestion of others, which ascribes certain features of cerebro-vascular behavior to an unusually rich vascular innervation, remains unproved.