Scanning electron microscopy of an elastic fiber network which forms the internal elastic lamina in canine saphenous vein

1980 ◽  
Vol 198 (4) ◽  
pp. 581-593 ◽  
Author(s):  
Robert S. Crissman ◽  
James N. Ross ◽  
Terrance Davis
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Saphenous Vein ◽  
Elastic Fiber ◽  
Internal Elastic Lamina ◽  
Fiber Network ◽  
Canine Saphenous Vein ◽  
Elastic Lamina ◽  
Scanning Electron

The effects of eazymetic digestion on the elastic properties of Isolated human cereberal arteries

1977 ◽  
Vol 55 (2) ◽  
pp. 161-169 ◽  
Author(s):  
Leslie C. Damude ◽  
David A. Cope ◽  
Margot R. Roach
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Cerebral Arteries ◽  
Age Group ◽  
Internal Elastic Lamina ◽  
Solution Ph ◽  
Medial Region ◽  
Histological Studies ◽  
Elastic Lamina ◽  
Scanning Electron

Measurement of volume, pressure, and length were made on eight segments of human cerebral arteries perfused with chymotrypsin (CT) (EC 3.4.21.1) solution (pH = 7.8) for no more than 19 h, and on nine arterial segments perfused with combined enzyme (CT, trypsin (EC 3.4.21.4), elastase (EC 3.4.21.11)) solutions (pH = 7.8) for no more than 4 h. Circumferential tension–strain (and absolute radius) curves were obtained through the Law of Laplace (tension = pressure × radius). Initial and final elastances (tension/strain) were calculated after 0, 0.5, 1.0, 2.0, and 4.0 h of perfusion under the combined enzyme category, and after 0, 0.5, 1.0, 2.0, 4.0, 6.0, and 19.0 h of perfusion with CT. The initial elastance showed a significant increase (0.02 < p < 0.05) after about 6 h of perfusion. Increases in the final elastance became significant only after prolonged periods of perfusion with CT. Histological studies using light and scanning electron microscopy confirmed the removal of the elastic lamina as well as portions of the medial region. Fragmentation of the internal elastic lamina did not appear to affect the distensibility of major cerebral arteries in the 50- to 80-year-old age group.

scholarly journals Purkinje Fiber Network in Mammalian Hearts, as Revealed by Scanning Electron Microscopy

2011 ◽  
Vol 27 (Supplement) ◽  
pp. CP1_02
Author(s):  
Tatsuo Shimada ◽  
Takeshi Yamaguchi ◽  
Hiroaki Kawazato ◽  
Noriaki Ono
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Purkinje Fiber ◽  
Fiber Network ◽  
Scanning Electron

Characterization of the Vasa Vasorum in the Human Great Saphenous Vein: A Scanning Electron Microscopy and 3D-Morphometry Study Using Vascular Corrosion Casts

2014 ◽  
Vol 20 (4) ◽  
pp. 1120-1133 ◽  
Author(s):  
Markus Herbst ◽  
Thomas Joachim Hölzenbein ◽  
Bernd Minnich
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Saphenous Vein ◽  
Great Saphenous Vein ◽  
Three Dimensional ◽  
Coronary Bypass ◽  
Vasa Vasorum ◽  
Corrosion Casts ◽  
Coronary Bypass Grafts ◽  
Scanning Electron

AbstractThe vasa vasorum (VV) of explanted segments of the human great saphenous vein (Vena saphena magna; HGSV), harvested during dissection for coronary bypass grafts or diseased vein segments from the “Salzburger Landesklinikum,” were studied by scanning electron microscopy and three-dimensional morphometry of microvascular corrosion casts. The main objective of this study was to examine the VV’s structural arrangement in order to find the most vital segments of the HGSV and in turn to improve the results of coronary bypass surgeries. The study presents a meticulous analysis of the whole microvascular system of the VV of the HGSV and its three-dimensional arrangement. It is one of the first studies yielding detailed quantitative data on geometry of the VV of the HGSV. A detailed insight into different vascular parameters such as vessel diameter, interbranching, intervascular distances, and branching angles at different levels of the VV’s angioarchitecture and in different parts of the HGSV in health and disease is given. Further, the geometry of bifurcations was examined in order to compute the physiological optimality principles of this delicate vascular system based on its construction, maintenance, and function.

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