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Morphological Study of Chick Heart at Different Stages of Development

机译:雏鸡不同发育阶段的形态学研究

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OBJECTIVE: The objective of this study was to study chick heart at different stages of development to serve as a normalbaseline.STUDY DESIGN: Descriptive studyPLACE AND DURATION: Department of Anatomy, Islamabad Regional Centre of College of Physician and Surgeon,Pakistan from February 2006 to February 2007.METHODOLOGY: Ninety chicken eggs were divided into three groups based on the day of sacrifice. Group 1 & 2 weresacrificed at day 7 & 10 of incubation respectively, and group 3 on hatching or day 22 whichever was earlier.RESULTS: At day 7 all the heart chambers were formed along with atrioventricular valves; however semilunar valvularcusps had rounded primordia. Elastic fibres could not be stained in great vessels of day 7 hearts in contrast to day 10 andnewly hatched chick hearts where elastic fibres were well stained. In a newly hatched chick heart the semilunar valvularcusps were thin and slender.CONCLUSION: Chick heart is a useful tool to study the effects of external teratogens on developing heart.
机译:目的:本研究的目的是研究处于不同发育阶段的鸡心,以作为正常的基线。研究设计:描述性研究地点和时间:巴基斯坦医师与外科医生学院伊斯兰堡区域中心解剖科,2006年2月至2007年2月,方法学:根据牺牲日将90枚鸡蛋分为三组。第1和2组分别在孵化的第7天和第10天牺牲,第3组在孵化或第22天,以较早者为准。然而,半月形瓣膜具有圆形的原基。与第10天和新孵出的雏鸡心脏相比,第7天心脏的大血管中的弹性纤维不能被染色,而在刚孵出的雏鸡心脏中,弹性纤维被很好地染色。在刚孵出的雏鸡心脏中,半月形瓣膜薄而细长。结论:小鸡心脏是研究外源致畸物对发育中心脏的作用的有用工具。

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