title: [Ostial valve of the inferior vena cava; a 5th heart valve (?)].
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000375:Aging; D002648:Child; D002675:Child, Preschool; D006351:Heart Valves / Q000002:abnormalities / Q000033:anatomy & histology* / Q000196:embryology / Q000502:physiology; D006439:Hemodynamics; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008875:Middle Aged; D014682:Vena Cava, Inferior / Q000002:abnormalities / Q000033:anatomy & histology* / Q000196:embryology / Q000502:physiology
vernacular_title: Ust'evoĭ kaplan nizhneĭ poloĭ veny--piatyĭ klapan serdtsa (?)