A re-evaluation of the cytology of cat Pacinian corpuscles
A re-evaluation of the cytology of cat Pacinian corpuscles
复制标题
猫帕西尼小体细胞学的重新评估
作者：
C. Idé;Y. Yoshida;S. Hayashi;M. Takashio;B. Munger
本报告是重新评估太平洋小体细胞学特征的两项研究中的第二项。太平洋小体轴突的末端已经被发现，并且与先前描述的超终端区有很大的不同。后者是内核板开始终止的部位，其特征是轴膜光滑。末端缺少直接贴近轴膜的内核板，其特征是存在许多突入基底板样物质基质的轴突。因此，轴突的最末端类似于面对内核裂隙的轴膜的组织。由于内核板与X轴轴膜紧密贴合，裂隙和末端的轴突被认为是限制血流的部位。因此，半内芯可以限制电流流向缝隙。这些解剖学上的特化可以代表机械-电子转导过程中K+离子的源和汇，并在一定程度上解释了太平洋小体对复杂压力波的精致敏感性。
SummaryThe present report is the second of two studies re-evaluating the cytological characteristics of Pacinian corpuscles. The extreme tip of the axon of a Pacinian corpuscle has been identified and is quite different from the previously described ultraterminal region. The latter is the site where the inner core lamellae begin to terminate and is characterized by a smooth axolemma. The extreme tip lacks inner core lamellae directly abutting the axolemma and is instead characterized by the presence of many axonal spines projecting into a matrix of basal lamina-like material. The extreme tip of the axon thus resembles the organization of the axolemma facing the clefts of the inner core. The axonal spines at the cleft and extreme tip are proposed as a site of restricted current flow due to the tight apposition of inner core lamellae to the axolemma of X-axis. The hemiinner cores thus could restrict current flow to the cleft. These anatomical specializations could represent both a source and a sink for K+ ions during mechano-electric transduction and account in part for the exquisite sensitivity of Pacinian corpuscles to complex pressure waves.
影响因子：
56.9
作者：
HUDSPETH, AJ
通讯作者：
HUDSPETH, AJ