title: [Morphofunctional study of the cava-hepatic venous transition in humans].
abstract: Using mesoscopic techniques, the authors observed that fibrous muscular bundles were distributed in three layers, from the external to the intima, in the cava-hepatic venous transition zone; these bundles start with a helical course, and bend progressively towards their outlet. Regarding the collagen component, two kinds of fibre bundles were observed: 1) as longitudinal strips, two for each vein that join in an arched form close to the outlet; 2) bundles running in the same direction as muscular bundles. The elastic tissue appears as a component of the myoelastic tendons or as independent bundles. The latter follow the direction of the muscular fibres, but show a decreasing amount when they approach the transition zone. At this point, however, the myoelastic tendons grow thicker.
authors.affiliation: Departamento de Anatomia, Universidade de São Paulo.
authors.forename: R P
authors.initials: RP
authors.lastname: Chopard
authors.forename: W
authors.initials: W
authors.lastname: Biazotto
authors.forename: A L
authors.initials: AL
authors.lastname: Jacomo
authors.forename: G A
authors.initials: GA
authors.lastname: Lucas
mesh_terms: D000293:Adolescent; D000328:Adult; D003238:Connective Tissue / Q000033:anatomy & histology; D004547:Elastic Tissue / Q000033:anatomy & histology; D006503:Hepatic Veins / Q000033:anatomy & histology*; D006801:Humans; D009131:Muscle, Smooth, Vascular / Q000033:anatomy & histology; D014682:Vena Cava, Inferior / Q000033:anatomy & histology*
vernacular_title: Contribuição para o estudo morfofuncional da transição venosa cavo-hepática no homem.