科研之友
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摘要
the pericardium is a fibrous and serous membrane that surround the heart and the juxta- cardiac portion of the great vessels. we studied the pericardium and diaphragm and we recorded different measurements, relations and connection between both. we dissected 142 mediastinal regions from 10% formaldehyde - fixed or fresh individual cadavers, brazilian adults, of both sexes, from 18-70 years of age. for the histology study from both structures were sectioned five fragments of different regions: anterior, next to sternum (region 1), left lateral, next to heart apex (region 2), posterior (region 3), right lateral, next to course of inferior vena cava (region 4) and central(region 5). the average of transversal and anterior-posterior diameters of pericardium were 103.3 + 6.7 mm and 66.0 ㊣ 2.3 mm, respectively; the same diameters of diaphragm were 309.4 ㊣ 27.4 mm and 152.5 ㊣ 24.9 mm, respectively. the diaphragm area was 37,260 ㊣ 2,324 mm2 and the area of pericardium base over the diaphragm was 6,042 ㊣ 367 mm2 . the thickness of diaphragm was 2.42 ㊣ 0.34 mm in right part, 2.38 ㊣ 0.71 mm in left part and 2.52 ㊣ 0.66 mm in anterior part. the thickness of pericardium was 0.26 ㊣ 0.02 mm. in region 2 both structures were easily separated in 47.2 mm; in the region 4 both structures are fused. the results of this study will complement the morphologic knowledges about fibrous pericardium and its relationships with the diaphragm.
