Truncus arteriosus is a rare and complex congenital (present at birth) heart defect that develops during the first eight weeks of pregnancy.Truncus arteriosus occurs when the two main blood vessels, the aorta and the pulmonary artery, stay connected and fail to separate completely as the fetus develops.Truncus arteriosus is further complicated because another congenital heart defect, ventricular special defect (VSD), occurs with it.runcus arteriosus occurs when the two main blood vessels, the aorta and the pulmonary artery, stay connected and fail to separate completely as the fetus develops. Truncus arteriosus is further complicated because another congenital heart defect, ventricular special defect (VSD), occurs with it.
Escutcheon (furniture) An escutcheon (pronounced /ÉªËskÊtÊÉn/, i-SKUCH-Én) is a general term for a decorative plate used to conceal a functioning, non-architectural item. Escutcheon is an old French word derived from the Latin word scutum, meaning a shield. Escutcheons are most often used in conjunction with mechanical, electrical, and plumbing components and fixtures where a pipe, tube, or conduit passes through a wall [or other material] surface.
1 Escutcheon-The escutcheon is the main shape of the coat of arms. 2  It was in the shape of a shield, but the exact shape could vary (see picture below). 3  Field-The field was the background color. 4  At first the field was a solid color, but later patterns began to be used for the field.