The superficial part of the cardiac plexus lies beneath the aortic arch, in front of the right pulmonary artery.

This ganglion, when present, is situated immediately beneath the arch of the aorta, on the right side of the ligamentum arteriosum.

The superficial part of the cardiac plexus gives branches to: The deep part of the cardiac plexus is situated in front of the bifurcation of the trachea (known as the carina), above the point of division of the pulmonary artery, and behind the aortic arch.

The branches from the right half of the deep part of the cardiac plexus pass, some in front of, and others behind, the right pulmonary artery; the former, the more numerous, transmit a few filaments to the anterior pulmonary plexus, and are then continued onward to form part of the anterior coronary plexus; those behind the pulmonary artery distribute a few filaments to the right atrium, and are then continued onward to form part of the posterior coronary plexus.

This article incorporates text in the public domain from page 984 of the 20th edition of Gray's Anatomy (1918)