Iijima T, Tagawa T
Anat Rec. 1976 Jul;185(3):373-80. doi: 10.1002/ar.1091850309.
The distribution of adrenergic and cholinergic nerves in the arteriovenous anastomosis in the rabbit's ear was studied light microscopically using specific histochemical techniques for catecholamines and acetylcholinesterase. Histochemical observations was made with whole stretch preparations and cryostat or paraffin sections. Both kinds of nerves showed similar distribution, though the adrenergic innervation was denser than the cholinergic one. The intermediate segments of the anastomoses, which were characterized by a very thick wall, had the most dense innervation. The small arteries and arterial segments had a moderate innervation whereas most of the small veins and venous segments had few nerve fibers. The segmental variation in the vasomotor nerve supply clearly suggests that the intermediate segment has the most active contractility. An unusually rich innervation in the anastomosis, therefore, indicates the significance of the neurogenic mechanisms in the vasomotor control of the anastomosis.
运用针对儿茶酚胺和乙酰胆碱酯酶的特定组织化学技术，通过光学显微镜研究了兔耳动静脉吻合处肾上腺素能神经和胆碱能神经的分布。采用全层拉伸标本以及低温恒温器切片或石蜡切片进行组织化学观察。尽管肾上腺素能神经支配比胆碱能神经支配更密集，但两种神经显示出相似的分布。吻合处的中间段以非常厚的壁为特征，其神经支配最为密集。小动脉和动脉段有适度的神经支配，而大多数小静脉和静脉段神经纤维很少。血管运动神经供应的节段性变化清楚地表明中间段具有最活跃的收缩性。因此，吻合处异常丰富的神经支配表明神经源性机制在吻合处血管运动控制中的重要性。
