Korean Journal of Veterinary Research (대한수의학회지)

The Korean Society of Veterinary Science (대한수의학회)
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The number and distribution of reinal ganglion cells in a Korean native cattle

한우(韓牛) 안구(眼球)의 망막신경절세포(網膜神經節細胞) 수(數)와 분포(分布)에 관(關)한 연구(硏究)

  • Kim, Moo-kang (Department of Veterinary Medicine, College of Agriculture, Chungnam National University) ;
  • Cho, Sung-whan (Department of Veterinary Medicine, College of Agriculture, Chungnam National University) ;
  • Ryu, Si-yun (Department of Veterinary Medicine, College of Agriculture, Chungnam National University) ;
  • Kim, Kyo-joon (Department of Veterinary Medicine, College of Agriculture, Chungnam National University) ;
  • Kim, Song-keun (Department of Veterinary Medicine, College of Agriculture, Chungnam National University) ;
  • Shin, Ta-kyun (Department of Anatomy, School of Medicine, Chungnam National University*) ;
  • Lee, Gang-iee (Department of Nursing, Tae Jon Junior College)
  • 김무강 (충남대학교 농과대학 수의학과) ;
  • 조성환 (충남대학교 농과대학 수의학과) ;
  • 류시윤 (충남대학교 농과대학 수의학과) ;
  • 김교준 (충남대학교 농과대학 수의학과) ;
  • 김상근 (충남대학교 농과대학 수의학과) ;
  • 신태균 (충남대학교 의과대학 해부학교실) ;
  • 이강이 (대전전문대학 간호학과)
  • Received : 1988.11.28
  • Published : 1989.01.31
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Abstract

The number and distribution of the retinal ganglion cells in the 2 years old Korean native cattle was determined from whole fiat mounted preparation stained with methylene blue and thionin. The results were summarized as follows. 1. The total number of retinal ganglion cells was estimated to be 3,085,200 in the bovine retina ranging from $2,214mm^2$ in total area. 2. Visual streak was recognized at the area 2.5mm superior to the optic disc and ganglion cell density drops off rapidly to the directions superior to and inferior to the visual streak. 3. Area centralis ($6,800cells/mm^2$) was located at the area 10mm temporally from the point of 3mm superior to the optic disc. 4. The number of ${\alpha}-type$ ganglion cells (above $15{\mu}$) was 57,000 in the bovine retina and ${\alpha}-type$ ganglion cells constituted 18.5% of the total cells. 5. The relative frequency of ${\alpha}-type$ ganglion cells was higher in the peripheral regions than in the visual streak, especially higher in the superior-temporal quadrant than in other region of the bovine retina.

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