Related Experiment Video
Updated: Jan 28, 2026

Teratoma Generation in the Testis Capsule
Published on: November 7, 2011
Influence of laterality on testis anatomy and histology in Ghezel rams
Hamid Karimi1, Mohammad Ranjbar Saraskanroud1, Fatemeh Balazadeh Koucheh2
1Department of Basic Science, Faculty of Veterinary Medicine, University of Tabriz, Tabriz, Iran.
Abstract:
Whether paired organs are equivalent has to be analyzed by assessing both structural and functional aspects. The present study compared the paired left and right testis from Ghezel sheep originating from Northwestern Iran (Azerbaijan) and Northeastern Turkey. Twenty-five pairs of testes were collected from mature Ghezel rams from Tabriz slaughterhouse. The two glands were compared for their size, weight and activity rate. Weight, length, width and thickness were measured. Then, paraffinized blocks were prepared by routine histological techniques and sections were stained by the haematoxylin-eosin method. Five 6 μm sections were prepared from each paraffinized block and 50 seminiferous tubules (STs) were analysed in each section for tubular differential index (TDI) and spermiogenesis index (SPI). TDI and SPI were compared between the paired left and right testes. Weight, length and thickness of left testes were significantly higher than in right testes (P < 0.05). Moreover, TDI and SPI were found to be higher in left testes than the right (P < 0.05).
Related Concept Videos
Lateralization
Anatomy of the Heart
Anatomy of the Eyeball
Tooth Anatomy
The Crown, Neck, and Root
The visible part of the tooth is referred to as the crown. It's covered by enamel, the hardest substance in the human body. The crown is uniquely shaped for each type of tooth, allowing for different functions such as cutting, tearing, or...
Anatomy of the Gastrointestinal System
Here's a detailed walkthrough of this complex system:
Stomach Histology

