title: [Histostructure of the venous bed of the hemorrhoidal zone of the human rectum].
abstract: In 90 preparations of the human rectum, venous vessels were studied. In all age groups, newborns and children including, trabecular veins with cone-shaped protrusions, intimal "cushons" and microvalves were revealed. In the columnar zone, on the lateral walls of the anal canal, they form cavernous bodies in arterio-venous anastomoses. In elderly and old-aged persons, as a result of myoelastofibrosis, thinning of the cavernous vein walls and partial hollowing of their lacunae take place.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001163:Arteriovenous Anastomosis; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D008875:Middle Aged; D012007:Rectum / Q000098:blood supply*; D014680:Veins
vernacular_title: Osobennosti gistostruktury venoznogo rusla gemorroidal'noĭ zony priamoĭ kishki cheloveka.