摘要
本实验旨在制作成年和幼年高原型藏绵羊(Ovis aries)的性腺动脉构筑标本,并比较其解剖学特征。分别从10只成年羊(雌雄各半)及10只3月龄幼年羊(雌雄各半)采集睾丸及卵巢样本,用8%~10%ABS铸型剂通过睾丸动脉或卵巢动脉灌注,再用浓盐酸腐蚀,获得动脉血管立体构筑标本,通过标本观察、图片采集、数据测定后进行分析。结果显示,绵羊精索内睾丸螺旋动脉呈椎体分布,直段动脉从睾丸中部分支,迂曲动脉构筑呈网兜状;卵巢动脉的卵巢支呈紧密螺旋状线圈分布,卵巢门动脉亦呈高度盘曲折叠状,其末端形成卵泡和黄体微动脉。研究发现,成年高原型藏绵羊睾丸和卵巢动脉血管的基本分布与普通牛(Bos taurus)的类似,成年羊与3月龄幼年羊的睾丸和卵巢动脉在管径大小、盘曲程度、微动脉多寡等方面存在显著差异,特别是成年羊的睾丸向心小动脉、卵巢门螺旋动脉更发达。
To achieve vascular casts of testicular and ovarian arteries and investigate their morphological characteristics in lamb and adult plateau-type Tibetan sheep（Ovis aries）, ten testes from five adult rams and ten ovaries from five adult ewes as well as three-month-old lambs were collected, and their arterial corrosion casts were obtained by 8%﹣10% ABS perfusion, and then their anatomical characteristics were determined by investigating architectures, analyzing data and pictures. Testicular spiral artery within spermatic cord showed cone shape, with its terminal becoming straight and branches at the middle. Testicular arteries at testis surface showed roundabout and formed tuck net shape（Fig. 1）. Ovarian branch of ovarian artery showed packed coiling even at ovarian hilum, and ovarian arterioles supplying blood for follicles and corpus luteumformed at the end of ovarian hilum coiling（Fig. 2）. Results demonstrate that gonads′ arterial distribution in Tibetan sheep is similar to that of cattle, and that significant differences in vascular diameters, curvature and amounts of arteriole in testis and ovary exist between lamb and adult sheep, especially there are more developed centripetal arteries in testis and spiral arteries at ovarian hilum in ovary.
出处
《动物学杂志》
CAS
CSCD
北大核心
2018年第1期69-74,共6页
Chinese Journal of Zoology
基金
国家自然科学基金项目(No.31560634)
关键词
高原型藏绵羊
性腺动脉
血管构筑
Plateau-type Tibetan sheep
Gonads＇ arteries
Vascular casts
