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Histomorphometric study of the ventricle and atrium of the heart in the river fish barbus grypus of Seymareh
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Hajar Azizian   , Salman Soltani , Aref Nooraei , Marziyeh Havasi , Zahra Bakhtiary * , Heidar Saadalvan |
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Abstract: (7 Views) |
Introduction: The heart in fish is the first organ to start working. The heart of fish has four parts and plays an important role in supporting high metabolic activity and adapting to environmental changes at different stages of fish development. Histologically, the atria and ventricles of fish have trabeculated muscles, and the muscle density in these two parts is different.
Materials and Methods: In this study, 10 of adult barbus grypus weighting 443.5±30.5 grams . After performing histological procedures, the muscle thickness and the number of muscle nuclei in the two parts of the atrium and ventricle were compared.
Results: The results of this study showed that the number of nuclei in cardiac muscles is greater than in the ventricles, and on the other hand, the thickness of the ventricular muscles was also greater. It was also shown that the cardiac muscles of this type of fish are striated and dense, with reduced muscle density in the atria, red blood cells were seen in tissue sections with oval nuclei, and muscle nuclei were also very pale and spindle-shaped.
Discussion: Given that the histology and anatomy of the heart are different in different fish, and on the other hand, structural differences cause fish to adapt to different environments, and the heart also plays an important role in supporting high metabolic activity and adapting to environmental changes at different stages of fish development, histological information in different species is very valuable.
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| Keywords: Histomorphometry, Atrium, Ventricle, barbus grypus |
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Type of Study: Research |
Subject:
Special
Received: 2025/10/12 | Accepted: 2025/11/23 | Published: 2025/12/8
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