Functional groups are defined as specific groupings of atoms or bonds which are part of a larger hydrocarbon chain. It is necessary that you are able to recognize these groups by structure and by name. The ending of the name as a suffix tells the type of compound or functional group present.
[TA] a slight constriction of the aorta immediately distal to the left subclavian artery at the point of attachment of the ductus arteriosus. Synonym(s): isthmus aortae [TA], isthmus of aorta. A constriction in the fetal aorta between the ductus arteriosus and the left subclavian artery.
Medical Definition of AORTA. : the large arterial trunk that carries blood from the heart to be distributed by branch arteries through the body. the great arterial trunk that carries blood from the heart to be distributed by branch arteries through the body â see heart illustration. â aorÂ·tic \-ËoÌr-tik\ adjective. See aorta defined for English-language learners.