Cardiac ganglion is situated ?
Nerve supply of heaNerve supply to the hea has both (i) Motor, and (ii) Sensory components.Motor componenti) Superficial cardiac plexus :- Lies in front of right pulmonary aery below the arch of aoa. It is fored by:- o Superior cervical cardiac branch of the left sympathetic chain.Inferior cervical cardiac branch of left vagus.A small ganglion, the cardiac ganglion of Wrisberg, is occaisonally found connected with these nerves at their point of junction. This ganglion, when present, is situated immediately beneath the arch of aoa, on right side of ligamentum aeriosum.ii) Deep cardiac plexus :- Lies in fron of the bifurcation of trachea, behind the arch of aoa. It is formed by all sympathetic and parasympathetic cardiac branches except those forming the superficial plexus.Sensory componentPain sensation arising due to ischemia is conveyed by afferents which pass through sympathetic cardiac fibers and reach the T1 to T, cord segments on left side. Since these dorsal root ganglia also receive sensory impulses from the medial side of arm, forearm and upper pa of front of chest, the pain gets referred to these areas through these thoracic splanchnic nerves (T1-T4). Though the pain is usually referred to the left side, it may even be referred to right arm, jaw, epigastrium, neck, shoulder or back.
Below arch of aoa
Above arch of aoa
Left side of ligamentum aeriosum
Posterior to ligamentum aeriosum