Figure 3
Macrophotographs of the newborn (A) and the adult (B) pressure inflated
human left atrium stained histochemically for acetylcholinesterase from
the inferior (A) and the lateral (B) views. Note in panel A the parallel
epicardial nerves of the LDsGP that extend from and inside the ligament
of Marshal (LOM) on the lateral wall of left atrium towards the inferior
side of left atrium (arrows) supplying the walls of left pulmonary veins
(PV) by thinner ganglionated nerves. White arrows in panel B point to
epicardial nerves of the LDsGP that extend on lateral side of the left
atrium as the LOM or the left atrial neural fold. Moreover, note the
thin epicardial nerves branching from the MDsGP and LDsGP in panel A as
well as from LDsGP in panel B that proceed towards the PVs. Dotted line
in panel A marks the reflection of pericardium into epicardium on roots
of the left PVs. Abbreviations are same as in figure 2.