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Tri dimensional architecture of elastic tissue in the rat aorta and femoral artery a scanning electron microscope study/


, : Tri dimensional architecture of elastic tissue in the rat aorta and femoral artery a scanning electron microscope study/. Journal of Electron Microscopy 32(1): 33-44

Overall tridimensional architecture of the elastic tissue in the rat aorta (elastic type artery) and femoral artery (muscular type artery) was studied by scanning electron microscopy after hot-formic acid extraction followed by freeze-drying method. In the aorta the elastic tissue is composed of 6-7 concentric plate-like laminae interconnected by radially oriented interlaminar elastic fibers; in the femoral artery it is composed of 2 distinct inner and outer sheet-like laminae bridged by a dense continuous interlaminar network of elastic fibers. The internal elastic lamina has numerous fenestrations which considerably differ in size, shape and structure between the 2 types of arteries. Tunnel-like compartments free of elastic tissue extend helically into the medial wall of both types of arteries. These findings are discussed in relation to conventional transmission electron microscopic information and some new functional roles of arterial elastic tissue are proposed.


Accession: 006839980

PMID: 6619709

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