The structures, properties, and chemical reactions of organic and biochemicals are determined by the functional groups present. 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. Functional Group Names: The ending of the name as a suffix tells the type of compound or functional group present.
1 Aortic dissection occurs when a tear occurs in the inner muscle wall lining of the aorta, allowing blood to split apart the muscle layers of the aortic wall.  Symptoms of aortic dissection include a tearing or ripping pain in the chest, sweating, nausea, shortness of breath, weakness, or syncope (fainting). Abdominal aortic dissection can present with abdominal pain radiating to the flank or back.
Chronic aortic dissection as a cause of fever of unknown origin. These include fever, retrosternal pain (pain behind the chest wall), sore throat, back pain, cough, abdominal pain, vomiting, diarrhea, conjunctivitis, facial swelling, proteinuria (protein in the urine), and mucosal bleeding.