Cardiac Plexus, Posterior View

Description

Posterior to the heart and great vessels, the cardiac plexus appears as a yellow interlacing network draped across the bifurcation of the trachea and the anterior aspect of the carina, with branches tracking inferiorly toward the posterior surface of the left atrium and the bases of the ventricles. Fine nerve bundles course along the roots of the lungs, hugging the main bronchi and the proximal pulmonary arteries and veins, then converge again toward the pericardial reflection. Superiorly, contributions from cervical cardiac nerves descend toward the aortic arch and pulmonary trunk, while more inferior fibers blend into the periarterial plexuses that follow the coronary vessels over the myocardium. Green lymphatic channels and nodes sit in the same crowded mediastinal corridor. Tight anatomy. A posterior perspective matters because it clarifies how autonomic fibers reach the heart from behind the great vessels, and why posterior mediastinal dissection can perturb rhythm and conduction. During bronchial and carinal surgery, lymph node sampling (subcarinal, tracheobronchial) and mobilization at the pulmonary hilum place these nerves at risk, with postoperative tachyarrhythmia, bronchospasm, or altered heart rate variability as real-world consequences. This angle also supports teaching the functional split between superficial and deep cardiac plexuses, and how vagal parasympathetic input and sympathetic fibers reorganize around the aortic arch and pulmonary artery before distributing to the atria, ventricles, and coronary circulation. Ideal for medical school thorax blocks, cardiothoracic anatomy labs, and anesthesia or critical care education where autonomic control of the myocardium intersects with airway anatomy at the trachea and bronchi. It also fits atlases and journal figures discussing mediastinal lymphadenectomy, pulmonary hilum approaches, or iatrogenic cardiac denervation. Anatomical accuracy verified by SciePro's Medical Advisory Board.