atrial intrinsic cardiac ganglion

atrial ganglionated plexus

A ganglion that is part of the atrial region of the heart. The activation of efferent neurons in this ganglion results in the modulation of heart rate, atrio-ventricular node conduction, and inotropism of atria and ventricles.

प्रकार Nerve
मूल संरचना trunk ganglion
लैटिन नाम atrial ganglionated plexus

अक्सर पूछे जाने वाले प्रश्न

What is the atrial intrinsic cardiac ganglion?
The atrial intrinsic cardiac ganglion is a ganglion located within the atrial region of the heart that forms part of the intrinsic cardiac nervous system. Activation of its efferent neurons is involved in modulating heart rate, atrioventricular node conduction velocity, and the contractile strength of both atrial and ventricular myocardium.
Where is the atrial intrinsic cardiac ganglion located?
Atrial intrinsic cardiac ganglia are embedded in the epicardial fat pads and connective tissue of the atria, particularly concentrated around the pulmonary vein ostia, the posterior left atrium, and the atrioventricular nodal region. They form interconnected neural plexuses on the surface of the heart.
What is the function of the atrial intrinsic cardiac ganglion?
The atrial intrinsic cardiac ganglia are part of the heart's local nervous system, which can modulate cardiac function independently of the central nervous system. Their neurons integrate inputs from both the vagus nerve and sympathetic fibers and help regulate heart rate, conduction through the AV node, and myocardial contractility in response to local cardiac conditions.
What conditions may affect the atrial intrinsic cardiac ganglion?
Atrial intrinsic cardiac ganglia may be associated with atrial fibrillation, as the ganglionic plexi near the pulmonary vein openings are believed to play a role in triggering and maintaining this arrhythmia. Ablation of these ganglionic plexi during pulmonary vein isolation procedures may modify vagal tone to the heart.
How is the atrial intrinsic cardiac ganglion examined?
Atrial intrinsic cardiac ganglia are examined histologically in cardiac tissue specimens, identified using neuronal markers. Electrophysiological mapping during catheter-based cardiac procedures can identify high-frequency stimulation sites corresponding to ganglionated plexi. Research studies use immunofluorescence and confocal microscopy to characterize these neural structures.

संबंधित संरचनाएं

mucus body coating mucous body coating mucus cocoon mucous cocoon Mullerian duct ductus paramesonephricus multi cell part structure cell part cluster multicellular anatomical structure multicellular structure multilaminar epithelium laminated epithelium multi-tissue structure multi-tissue structures multi-unit eye

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Data sources: Terminologia Anatomica, Foundational Model of Anatomy, Wikidata.