Tkacehnko B I, Kul'chitskiĭ V A, Savel'ev A K
Fiziol Zh SSSR Im I M Sechenova. 1988 Mar;74(3):374-81.
In acute experiments of 22 cats with simultaneous perfusion of the crus and small intestine's vessels, the neurocytes affecting the neurogenic tone of the vessels were found 2 mm caudal of the middle of exposure of the n. n. hypoglossi roots and 6 mm rostral of this level, the depth being 1000-2000-3000 mu ventral of the medulla oblongata surface. Cerebral structures situated at the level of the middle of exposure of the n. n. hypoglossi roots, 2-4-6 mm rostral of this level, at the depth 1000-2000-3000 mu and stimulation of which increases regional vascular resistance, are called pressor ones. Electrical activity of the neurocytes situated 2 mm caudal of the middle of exposure of the n. n. hypoglossi roots, at the depth 1000-2000-3000 mu, mostly decreases neurogenic tone of the organ vessels (depressor area). Proportional dependence of the vasoconstrictor response of the vessels on the stimulation intensity was only found in activation of neurons in the points of pressor area. A greater increase (1.5-fold) of perfusion pressure in the crus vessels as compared with the small intestine's those in stimulation of comparable points of the pressor area suggests different density of distribution of the neurons affecting neurogenic tone of the crus and small intestine's vessels.
在对22只猫进行的急性实验中，同时灌注小腿和小肠血管，发现影响血管神经源性张力的神经细胞位于舌下神经根暴露中点尾侧2毫米处以及该水平头侧6毫米处，深度在延髓表面腹侧1000 - 2000 - 3000微米。位于舌下神经根暴露中点水平、该水平头侧2 - 4 - 6毫米处、深度为1000 - 2000 - 3000微米且刺激时会增加局部血管阻力的脑结构被称为升压结构。位于舌下神经根暴露中点尾侧2毫米处、深度为1000 - 2000 - 3000微米的神经细胞的电活动大多会降低器官血管的神经源性张力（降压区）。仅在升压区各点的神经元激活时发现血管的血管收缩反应与刺激强度呈比例依赖关系。与小肠血管相比，在刺激升压区可比点时小腿血管灌注压有更大幅度的升高（1.5倍），这表明影响小腿和小肠血管神经源性张力的神经元分布密度不同。
