Extrinsic and intrinsic innervation in the large intestine of the chicken

鸡大肠的外在和内在神经支配

基本信息

批准号：
11660295
负责人：
OHMORI Yasushige
金额：
$ 2.3万
依托单位：
Nagoya University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1999
资助国家：
日本
起止时间：
1999 至 2001
项目状态：
已结题

项目摘要

In the present study, the following points were elucidated. Autonomic preganglionic neurons were not nitrergic neurons in the spinal cord of the chicken. Sacral parasympathetic preganglionic fibers projected for the rectum through the pudendal and intestinal nerves but not arrived at the rectum- Sympathetic postganglionic fibers from paravertebral ganglia in the sacral region projected into the rectum through the pudendal nerve, or sacral splanchnic nerves and caudal mesenteric plexus- Sensory fibers form the dorsal root ganglia in the thoracolumbar level projected into the rectum through sacral splanchnic nerves, caudal mesenteric plexus and then intestinal nerve- On the. Other hand, sensory fibers from the dorsal root ganglia in the sacral level projected through the pudendal and intestinal nerves in addition to the pathway mentioned above- Enkephalin-immunoreactive neuronal cell bodies were found in the caudal part of the rectal intestinal nerve and their nerve terminals closely surrounded large-sized cecum-projecting neurons in the cranial part of the rectal intestinal nerve. In the myenteric and submucosal plexuses in the cecum and rectum, nitrergic neuron-containing ganglia and nerve bundles formed the networks. These extrinsic and intrinsic innervation in the large intestine of the chicken may be involved with unique motility of the rectum and ceca that uric acid is retrogradely carried from the cloaca to the ceca.

在本研究中，阐明了以下几点。自主神经前神经元不是鸡的脊髓中的硝化神经元。 s骨副交感神经前纤维通过底部和肠道神经投射为直肠，但没有到达椎间钟内神经节的直肠交感神经后纤维，该纤维神经节在s骨神经节中，在直肠上通过s骨，或s骨的神经，或s骨膜状神经，或s骨膜状神经形式，胸腰骨水平的背根神经节通过s骨神经，尾神经，然后在直肠中投射到直肠中，然后在肠道神经上进行肠道神经。 Other hand, sensory fibers from the dorsal root ganglia in the sacral level projected through the pudendal and intestinal nerves in addition to the pathway mentioned above- Enkephalin-immunoreactive neuronal cell bodies were found in the caudal part of the rectal intestinal nerve and their nerve terminals closely surrounded large-sized cecum-projecting neurons in the cranial part of the直肠肠道神经。在塞库姆和直肠的骨膜和粘膜丛中，含氮神经元的神经节和神经束形成了网络。这些鸡的大肠中的这些外在和内在神经可能与直肠和CECA的独特运动有关，即尿酸从泄殖腔逆转到CECA。