[The function of the precortical arteries].
In anesthetized adult rabbits, the responses of pial and precortical arteries to retinal photostimulation and the application of 0.5% strychnine solution to the brain surface were studied, as well as the distribution of cholinergic and adrenergic nerve fibres in these microvessels. The precortical arteries showed the highest degree of dilatation and frequency of responses. Dense innervation was mostly in evidence in the precortical arteries. Upon atropin application, the response suppression was also more obvious in the precortical arteries. The data suggest that the precortical arteries play an important role in regulation of the adequate blood supply to the brain tissue.
Gordeladze
Z T
ZT
Baramidze
D G
DG
Levkovich
Iu I
IuI
D000320:Adrenergic Fibers / Q000187:drug effects / Q000502:physiology; D000818:Animals; D001285:Atropine / Q000494:pharmacology; D002536:Cerebral Arteries / Q000187:drug effects / Q000502:physiology*; D002540:Cerebral Cortex / Q000098:blood supply* / Q000187:drug effects; D002799:Cholinergic Fibers / Q000187:drug effects / Q000502:physiology; D005260:Female; D008297:Male; D010775:Photic Stimulation; D010841:Pia Mater / Q000098:blood supply / Q000187:drug effects; D011817:Rabbits; D012160:Retina; D013331:Strychnine / Q000494:pharmacology; D014664:Vasodilation / Q000187:drug effects / Q000502:physiology
D001285:Atropine; D013331:Strychnine
Funktsiia prekortikal'nykh arteriĭ.