Document Details

Document Type : Thesis 
Document Title :
Comperative Histological studies on reproductive system of three reptilians from Western Region of Saudi Arabia
دراسات نسيجية مقارنة علي الجهاز التناسلي لثلاث من زواحف المنطقة الغربية بالمملكة العربية السعودية
 
Subject : Biological 
Document Language : Arabic 
Abstract : Gonads of some squamates are studied in this work. In both lizard and chamaeleon, the testis occupies the middle part of the body, where as the testis of the snake is located in the last third of the body, the right testis is situated slightly further to the left one in these three species. The testis is co\ered by tunica albuginea which consists of fibrous connective tissue and surrounded by a layer of peritoneal epithelium. The latter is connected to mesorchium. The testis consists of seminiferous tubules v.hich contain ge~inal cells in different developmental stages. These celIs are arranged in anirregular order in lizard, where as in chamaeleon and the snake they have a regular order. Sertoli cells were observed between the spermatogenic cells against the basement membrane. The interlobular tissue surrounds the seminiferous tubules and contains blood essels and interstitial cells. The ovary is located in the middle part of both lizard and chamaeleon, where as in the snake the ovary occupies the last third of the body, The right o\af) is situated slightly further to left one in the three specJes. The ovary is co\.ered by peritoneal epithelium which is connected to. the mesov ari urn, tov.ards the inside of the o\ary, there exists the fibrous connective tissue extending to the stroma ovarii and finally to the germinal epithelium. The ovary contains one germinal bed in lizard, whi]e chamacleons ovary contains tv.o germinal beds, where as in the snake there are more than one germinal bed, that contains many oogonia and few oocytes. The ovary also contains large oocytes, corpora lutea and a quantity of connective tissue which connects these structure together. Oocates were classifficed into four groups according to the granulosa layer v.hether it is composed of one or two layers and the presence of the pyriform cells. In lizard and chamaaleon there are three types of cells in granulosa layer which are the small, large and pyriform cells. Where as in the snake, there are only two types of cells, small and large cells. 
Supervisor : Dr. Suhair Elsayed Mahdi Khdar 
Thesis Type : Master Thesis 
Publishing Year : 1419 AH
1998 AD 
Co-Supervisor : Prof. Osama Abdullah Abu Zinadah 
Added Date : Thursday, June 12, 2008 

Researchers

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
حبيبة شمس الدين ولي سيتWali Sait, Habiba Shams AldeenResearcherMasterhsait@kau.edu.sa

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 24144.pdf pdf 

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