A phrenic artery that arises from the lower part of the thoracic aorta and is distributed to the posterior part of the upper surface of the diaphragm, and anastomoses with the musculophrenic and pericardiacophrenic arteries. [ http://orcid.org/0000-0002-6601-2165 http://en.wikipedia.org/wiki/Superior_phrenic_artery ]