Thoracic aortic plexus

Diagram of the thoracic aortic plexus (labeled as Aortic plexus)

The Thoracic Aortic Plexus is a network of nerves that surrounds the thoracic aorta, the largest artery in the thoracic region of the body. This plexus is part of the autonomic nervous system, which controls involuntary body functions such as heart rate and blood pressure.

Anatomy

The thoracic aortic plexus is formed by branches from the superior cervical ganglion, the inferior cervical ganglion, and the first four or five thoracic ganglia. It also receives filaments from the cardiac plexus.

Function

The thoracic aortic plexus carries both sympathetic and parasympathetic fibers. The sympathetic fibers are involved in the regulation of blood pressure and heart rate, while the parasympathetic fibers are involved in slowing the heart rate and promoting digestion.

Clinical Significance

Disorders of the thoracic aortic plexus can lead to a variety of symptoms, including chest pain, shortness of breath, and changes in heart rate or blood pressure. These disorders can be caused by a variety of conditions, including trauma, tumors, and diseases such as aortic aneurysm and aortic dissection.

See Also

• Aorta
• Autonomic nervous system
• Thoracic aorta