cardiac plexus的意思|示意

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Cardiac plexus is a mixed nerve plexus composed of both parasympathetic and sympathetic nerve fibers. It provides the parasympathetic autonomic innervation to the heart. This plexus is located in the posterior mediastinum in the thoracic cavity and is made up of both afferent and efferent fibers.

The vagus nerve is the primary afferent of the cardiac plexus. It is responsible for providing parasympathetic innervation to the sinuatrial and atrioventricular nodes, which helps to control the heart rate. The sympathetic fibers are derived from the greater cardiac plexus, and they innervate the cardiac muscle and coronary arteries.

The cardiac plexus is important for the proper functioning of the heart. It acts to control the heart rate in response to autonomic stimuli and provides parasympathetic innervation to the sinuatrial and atrioventricular nodes. This nerve plexus is also responsible for stimulating the coronary arteries and providing vital autonomic innervation to the heart.