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A nervous connection between the hepatic plexus and right atrium in man
Gegenbaurs Morphologisches Jahrbuch
|January 1, 1984
Summary
Researchers found a direct nervous pathway connecting the hepatic plexus to the heart's right atrium. This neural link, composed of fine nerves, was identified using advanced microscopic techniques in adult human specimens.
Area of Science:
- Anatomy
- Neuroscience
- Cardiology
Background:
- The intricate innervation of abdominal organs and their potential connections to the cardiovascular system remain areas of ongoing research.
- Understanding neural pathways is crucial for comprehending organ function and inter-organ communication.
Purpose of the Study:
- To investigate the existence and anatomical details of a direct nervous connection between the hepatic plexus and the right atrium.
- To elucidate the specific structures and pathways involved in this potential neural link.
Main Methods:
- Dissection of 43 adult human necropsy specimens under stereomicroscope.
- Application of various histological staining techniques, including silver impregnations (Cajal-De Castro, Palmgren) and myelin stains (Klüver-Barrera, Pal-Weigert), and trichromic methods (Van Gieson, Azan).
Main Results:
- Identification of fine nerves forming a direct pathway from the hepatic plexus (celiac plexus) to the left atrium.
- This pathway utilizes structures including the left branches of the hepatic artery and portal vein, venous ligament, left hepatic vein, and inferior vena cava, traversing the foramen for the V. cava.
- The nerves are predominantly visible only at the microscopic level.
Conclusions:
- A direct neural connection between the hepatic plexus and the right atrium is suggested.
- This pathway involves specific anatomical routes and fine nerve fibers, highlighting a previously underappreciated link between the liver's autonomic innervation and the heart.