投射纤维

The superficial laminae of the spinal dorsal horn, especially lamina II which is composed mainly of small interneurons, receive primary afferent C fibers which transmit peripheral noxious information, and descending projection fibers from central endogenous antinociceptive system.

脊髓背角浅层，尤其是Ⅱ层是接受无髓和薄髓初级传入纤维传递的外周伤害性信息及来自中枢内源性痛抑制系统投射纤维传递的痛抑制信息的主要部位，胶状质主要由局部环路神经元构成。

The present morphological experiments revealed that Barrington's nucleus in the rabbit was also located in the dorsal pontine tegmentum, and that it sent projections fibers to the sacral parasympathetic nucleus and received afferent axons from the sacral spinal cord.

本实验研究表明，家兔Barrington's核亦位于脑桥被盖背外侧部，它发出纤维投射至骶髓副交感核，同时也接受来自骶髓的投射纤维，提示其脑桥排尿反射的构成可能与大鼠相似（论文4）。

Barrington's nucleus that located in the pontine dorsolateral tegmentum is an important site for controlling voiding in the mammalian brain and is often referred to as pontine micturition center. Barrington's nucleus sends direct projection fibers to the sacral parasympathetic nucleus in which parasympathetic preganglionic neurons innervating detrusor muscles of the bladder are distributed. Electron or chemical stimulation of Barrington's nucleus clicits bladder contraction and increases discharges of bladder postganglionic nerve. Conversely, lesion of the nucleus results in a permanent inability to empty the bladder. On the other hand, an area located just ventral to Barrington's nucleu has been reported to send projection fibers to the ventrolateral group of Onuf's nucleus in the caudal lumbar cord segments; the vetrolateral group of Onuf's nucleus is mainly composed of pudendal motor neurons innervating the external urethral sphincter muscle.

Barrington's核发出纤维投射至支配膀胱逼尿肌的骶髓副交感核，毁损该区可导致动物永久性失去排空膀胱的能力；而电刺激或化学刺激该区可引起支配膀胱的节后纤维放电增加和膀胱逼尿肌收缩。D区是紧邻Barrington's核腹侧的一团神经元，它发出纤维投射至腰骶髓Ounf核的腹外侧群，而Ounf核的腹外侧群主要是由支配尿道外括约肌的阴部神经运动神经元组成。

Additionally, projecting fibers that originated from the inner and outer part of DH were also observed at E16 and E17, they elongated ventrally and terminated in the contralateral spinal cord by crossing the posterior commissure. The number of fibers gradually increased with time till birth.

DH内侧部和外侧部分别在E16和E17时开始发出投射纤维，向腹内侧经灰质后联合终止在对侧脊髓，纤维数量随时间逐渐增加直至生后。

RESULTS In normal volunteers group, anisotropy measurements in white matter regions were significantly larger than that of gray matter regions, different white matter structures show different anisotropy degree, with the commissural neurofibers of white matter having the highest value, followed by projection fibers and association fibers.

结果 在正常组DTI显示灰质与白质区各向异性存在显著差异，不同部位的白质纤维束各向异性程度亦不相同，脑白质连合纤维各向异性程度最高，其次为脑白质的投射纤维，再次为联络纤维、丘脑、基底节区灰质核团等。

In summary, the present study revealed that Barrington's nucleus and D-region received direct projection fibers from the sacral spinal neurons in lamina I, parasympathetic nucleus and dorsal commissural nucleus; periaqueductal gray also received afferent projections from the lumbosacral spinal cord and sent projection fibers to the Barrington's nucleus and D-region.

上述结果说明：大鼠腰骶髓 I 层、骶髓副交感核和后连合核神经元发出的投射纤维直接终止于 Barrington's 核和 D 区内；导水管周围灰质也接受来自腰骶髓的投射纤维，同时发出纤维终止于 Barrington's 核和 D 区内。

RESULTS: The fibers of optic nerve projected to the dorsomedial side of suprachiasmatic nucleus and the fibers of hypoglossal nerve projected on the hypoglossal nucleus on dorsomedial portion of the medulla oblongate.

结果：视神经纤维投射到视交叉上核背内侧；舌下神经纤维投射到延髓背侧的舌下神经核区，结果显示神经元的胞体和轴突结构清晰。

Moreover, the S1 area was shown to be more easily activated and more intensively innervated by the thalamocortical afferent projections than by the intracortical connections.

其次，刺激IV层在每一刺激强度下诱发的场电位幅度远远大于刺激II-III的场电位幅度，即S1区更容易被丘脑皮层连接回路的投射纤维所激活。

Position: a thick lamina of white matter lying between caudate nucleus, thalamus and lentiform nucleus

掌握基底核的组成、内囊的概念、分部及主要投射纤维束。

Cells in EGL are generated after birth. In contrast Purkinje neurons are born before birth, which receive main innervations of climbing fibers from the inferior olivary nucleus and parallel fibers from the internal granule cells.

与浦肯野氏神经元在出生前产生这一点不同的是，EGL中的细胞在出生后产生，它们接受从前脑olivary核团发出的攀援纤维的主要神经投射，以及从内颗粒细胞发出的平行纤维的神经投射。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了