Quantitative Analysis of the Optic Nerve of the Horse(Thoroughbred).
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- GUO Xiaoli
- Department of Animal Science, Faculty of Agriculture, Utsunomiya University Doctoral Course in United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology
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- AOYAMA Masato
- Department of Animal Science, Faculty of Agriculture, Utsunomiya University
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- SUGITA Shoei
- Department of Animal Science, Faculty of Agriculture, Utsunomiya University
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抄録
Three optic nerves (L1, R2, R3) 12-18 mm behind the eyeball of the horse (Thoroughbred) were investigated quantitatively under light and electron microscopes. Thin sections at the thickness of 0.35 μm were cut, stained by toluidine blue and observed under the light microscope. The areas of the optic nerve and the axon bundles were 20.03 ± 1.04 and 16.59 ± 0.79 mm2 (mean ± SD, n=3), respectively. The axon numbers for optic nerve L1, R2 and R3, estimated from light micrographs, were about 481 × 10 3 , 543 × 103 , and 494 × 103 , respectively. Axons of optic nerve L1 were also counted from electron micrographs and the total number of 488 × 103 was received. Furthermore, axon diameters of optic nerve L1 were also measured from electron micrographs. The diameter of a circle with the same peripheral length as an axon, was regarded as its diameter. The medullary sheath of the axon was not included during measuring. Altogether 5,744 axons were measured and axon diameters were in a range of 0.23-12.69 μm, with a mean of 2.56 ± 1.45 μm (mean ± SD). A regional difference of axonal diameters was found across the optic nerve: the mean diameter of axons in the centro-dorsal region (2.28 μm) was the smallest, and had significant difference with those in several peripheral regions (P<0.05).
収録刊行物
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- The Journal of Veterinary Medical Science
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The Journal of Veterinary Medical Science 63 (9), 971-975, 2001
公益社団法人 日本獣医学会
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詳細情報 詳細情報について
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- CRID
- 1390001206426780416
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- NII論文ID
- 110003920730
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- NII書誌ID
- AA10796138
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- COI
- 1:STN:280:DC%2BD3Mrmt1amsQ%3D%3D
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- ISSN
- 13477439
- 09167250
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- NDL書誌ID
- 5938226
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- PubMed
- 11642285
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
- PubMed
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可