Aorticorenal ganglion

Anatomical structure in the autonomic nervous system

The aorticorenal ganglion is a collection of neurons in the autonomic nervous system located near the origin of the renal artery from the abdominal aorta. It is part of the sympathetic nervous system and plays a role in the regulation of renal function and blood pressure.

Diagram of the aorticorenal ganglion and surrounding structures.

Anatomy

The aorticorenal ganglion is situated in the retroperitoneal space, near the celiac ganglion and the superior mesenteric ganglion. It is typically found at the level of the first lumbar vertebra (L1), adjacent to the abdominal aorta. The ganglion receives preganglionic sympathetic fibers from the thoracic splanchnic nerves, primarily the lesser splanchnic nerve.

Function

The primary function of the aorticorenal ganglion is to relay sympathetic signals to the kidneys and the adrenal glands. These signals influence renal blood flow, glomerular filtration rate, and the release of renin, a hormone involved in the regulation of blood pressure. The ganglion also plays a role in the body's response to stress by modulating the activity of the adrenal medulla, which secretes catecholamines such as epinephrine and norepinephrine.

Clinical significance

Dysfunction or damage to the aorticorenal ganglion can affect renal function and blood pressure regulation. Conditions such as autonomic neuropathy or sympathetic overactivity may involve the aorticorenal ganglion, leading to clinical symptoms such as hypertension or renal impairment.

Related pages

• Autonomic nervous system
• Sympathetic nervous system
• Renal artery
• Adrenal gland
• Thoracic splanchnic nerves