Histostructure of the venous bed of the hemorrhoidal zone of the human rectum
Mel'man, E.P.; Datsun, I.G.
Arkhiv Anatomii Gistologii i Embriologii 73(8): 59-65
1977
ISSN/ISBN: 0004-1947 PMID: 907487 Document Number: 121754
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.