| 闽南近海尖头斜齿鲨的胎盘结构 |
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| 引用本文： | 陈明茹,丘书院,杨圣云.闽南近海尖头斜齿鲨的胎盘结构[J].海洋科学,2000,24(8):50-53. |
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| 作者姓名： | 陈明茹 丘书院 杨圣云 |
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| 作者单位： | 厦门大学海洋系,361005 |
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| 基金项目： | 福建省自然科学基金资助项目!C93054号，博士点基金资助项目!9338410号 |
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| 摘 要： | 尖头斜齿鲨的采集始自１９９３年，前后共历时３ａ多，捕捞地点是厦门至东山近岸水域。作者利用光镜和电镜观察了其胎盘的形态和组织结构。其发育完整的胎盘包括母体胎盘和子体胎盘，与胚胎一一对应。母体胎盘分为４部分（由母体端至子体端）：滋养毛基、滋养毛球茎、滋养毛柱、滋养毛柱、滋养毛杯。滋养毛的中心部分是致密结缔组织，中间有血管，外围是大面积的腺体组织，腺体组织的边缘凹凸曲折，形成充满皱褶的外表面。子体胎盘包
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| 关 键 词： | 尖头斜齿鲨 胎盘 结构 母体胎盘 子体胎盘 |
| 收稿时间： | 1999/11/22 0:00:00 |
| 修稿时间： | 2000/1/18 0:00:00 |
THE STRUCTURE OF PLACENTA OF Scoliodon laticaudus FROM SOUTHERN FUJIAN COASTAL WATERS |
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| CHEN Ming-ru,QIU Shu-yuan,YANG Sheng-yun.THE STRUCTURE OF PLACENTA OF Scoliodon laticaudus FROM SOUTHERN FUJIAN COASTAL WATERS[J].Marine Sciences,2000,24(8):50-53. |
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| Authors: | CHEN Ming-ru QIU Shu-yuan YANG Sheng-yun |
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| Abstract: | Samplingbeganfrom1993,incoastalwatersfromXiamentoDongshanandlastedformorethan3years.Thestudyon placentaofScoliodonlaticauduswasundermicroscopeandelectricmicroscope. Thewholeplacentaincludesmaternalplacentaandfoetalplacenta.Thematernalplacentaconsistsofthefourcom ponents(fromthematernaltothefoetalend):thetrophonematousstalk,thetrophonematousbulb,thetrophonematouscord andthetrophonematouscup.Compactconnectivetissuesfillthecentralportionofthetrophonemata,withbloodvesselsin. Glandulartissuesfillthemarginalportionofthetrophonemata.Theexternalsurfaceofthetrophonemataiswrinkled. Thefoetalplacentaconsistsoftheyolksacandtheumbilicalcord.Theyolksachastwoportions:(1)thesmooth proximalportionconnectingwiththeumbilicalcord;(2)theroughdistalportionbeingreceivedintothetrophonematous cup.Theumbilicalcordcontainsonlyanarteryandaveinandnoductusvitellointestinalis.Theumbilicalcordhasmany appendiculae.Theyolksacisreceivedintothetrophonematouscuptoformacompositeplacentalarrangement.Noembry onicmembraneintervenesbetweenthefoetalandmaternalplacentaltissues.Transplacentalnutrienttransfermaybe hemotrophic. |
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| Keywords: | Scoliodonlaticaudus Placenta Structure |
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