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Morphologic features of lymph vessels in caprine hemal nodes
1Department of Veterinary Anatomy, University of Nigeria, Nsukka.
American Journal of Veterinary Research
|July 1, 1990
Summary
This study details the structure of lymph vessels in goat hemal nodes, revealing specialized endothelial cells adapted for transendothelial transport, crucial for immune functions.
Area of Science:
- Veterinary Anatomy
- Lymphatic System Research
- Caprine Hematology
Background:
- Caprine hemal nodes play roles in blood storage and immune defense.
- Understanding their lymphatic drainage is essential for comprehending these functions.
Purpose of the Study:
- To investigate the distribution and ultrastructural characteristics of lymph vessels within caprine hemal nodes.
- To correlate lymphatic vessel morphology with the known functions of hemal nodes.
Main Methods:
- Specimens were fixed with glutaraldehyde and embedded in epoxy resin.
- Histological and ultrastructural analyses were performed to examine lymph vessel morphology.
- Lymph vessels were mapped from the cortex to the hilum.
Main Results:
- Lymph vessels possess thin walls, wide lumens with lymph, and contrast with blood sinuses.
- A distinct pattern of lymph vessel distribution was observed: circumferential cortical vessels feeding into radial medullary branches.
- Ultrastructural examination revealed endothelial cell fenestrations, vesicles, and focal splits, indicating active transport capabilities.
- Erythrocytes and lymphocytes were found within endothelial cell compartments, suggesting a role in cellular traffic.
Conclusions:
- Caprine hemal node lymph vessels are adapted for efficient transendothelial transport of substances and cells.
- The observed lymphatic architecture supports the roles of hemal nodes in hemoconcentration and immune surveillance.