ULTRASTRUCTURE OF THE CORPUSCULAR NERVE ENDING IN THE LYMPH HEART OF THE TURTLE (PSEUDEMYS-SCRIPTA-ELEGANS)
ULTRASTRUCTURE OF THE CORPUSCULAR NERVE ENDING IN THE LYMPH HEART OF THE TURTLE (PSEUDEMYS-SCRIPTA-ELEGANS)
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DOI：
10.1679/aohc.46.115
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发表时间：
1983-01-01
期刊：
影响因子：
--
通讯作者：
NITATORI, T
中科院分区：
文献类型：
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作者：
SATOH, Y;NITATORI, T
在龟淋巴心脏的外膜中发现了微粒神经末梢。它们由轴突终末和周围的细胞片组成。我们制作了1个这样的感觉小体的连续薄片，并重建了这些小体的三维EM分析，特别参考了轴突末端。显然，轴突末端在小体内的几个点分叉，形成了大小不等的变异，范围在1.0-3.0 μ之间。直径为M。这种变异含有丰富的线粒体以及500-800 . ang的透明颗粒状囊泡。直径。指状突起常从轴突终末伸出到层间间隙。片层由改良雪旺细胞的几个薄细胞质层组成。小体被包裹在由一层薄薄的细胞突起组成的不完整的胶囊中。微粒神经末梢可能代表淋巴心脏壁上的升压受体。
Corpuscular nerve endings were found in the tunica externa of the lymph heart of a turtle (Pseudemys scripta elegans). They consisted of axon terminals and surrounding cellular lamellae. Serial thin sections of 1 such presumable sensory corpuscle were made and reconstructed for the 3-dimensional EM analysis of the corpuscle, with special reference to the axon terminals. Apparently, axon terminals ramified at several points within the corpuscle and formed varicosities of various sizes ranging from 1.0-3.0 .mu.m in diameter in their courses. Such varicosities contained an abundance of mitochondria as well as clear and granular vesicles 500-800 .ANG. in diameter. Finger-like protrusions often projected from the axon terminals into the interlamellar spaces. The lamellae consisted of several thin cytoplasmic processes of modified Schwann cells. The corpuscle was enclosed in an incomplete capsule consisting of a thin layer of cellular processes. The corpuscular nerve endings may represent pressorreceptors in the wall of the lymph heart.