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Updated: Jan 7, 2026
Scanning Electron Microscopy of Macerated Tissue to Visualize the Extracellular Matrix
Published on: June 14, 2016
[The cardiac microcirculatory bed based on data from the scanning electron microscopy of corrosion preparations]
Insights
Scanning electron microscopy revealed lymphangions as key units in the lymph microcirculation bed. Lymph capillaries and postcapillaries possess structures enabling unidirectional lymph flow and adjustable lumen width.
Area of Science:
- Cardiovascular Science
- Microcirculation Research
- Lymphatic System Anatomy
Context:
- Understanding the intricate structure of the heart's microvasculature is crucial for comprehending cardiovascular health and disease.
- Previous studies have focused on blood microcirculation, with less detailed investigation into the lymphatic component within the heart.
Purpose:
- To investigate the volumetric relationships between blood and lymphatic microcirculation in the heart.
- To characterize the specific surface relief features of heart lymphatic vessels using scanning electron microscopy.
Summary:
- Scanning electron microscopy of cast preparations was employed to analyze the heart's hemo- and lymph microcirculation beds.
- Lymphangions were confirmed as the fundamental morphological units of the cardiac lymph microcirculation.
- Unique valve-shaped impressions and folds were observed in lymph capillaries and postcapillaries, indicating mechanisms for unidirectional lymph transport and lumen adaptation.
Impact:
- This research validates lymphangions as functional units within the cardiac lymphatic system.
- The findings elucidate the structural adaptations of lymph capillaries and postcapillaries that regulate lymph flow dynamics.
- Provides novel insights into the morphology of the cardiac lymphatic system, potentially informing future research on lymphatic function and dysfunction.
Abstract:
The method of scanning electron microscopy of cast preparations was used to study the volumetric interrelations of hemo- and lymph microcirculation bed links as well as specific features of the relief of the wall of the heart vessels in question. The lymphangions were confirmed to be rightfully considered as a morphological unit of the lymph microcirculation bed. The valve-shaped impressions and folds of the relief of a cast of lymph capillaries and postcapillaries were found which shows the ability of the lymph postcapillaries to maintain a one-direction flow of lymph and to change the lumen width for different amounts of the flowing lymph.
