Aorticorenal Plexus Flashcards

Examine the aorticorenal plexus, its ganglia, splanchnic nerve contributions, renal connections, and sympathetic pathways.

Card 1 of 15Question

What is the aorticorenal plexus?

An autonomic nerve network associated with the aorticorenal ganglia near the origins of the renal arteries.

In This Section

1. What is the aorticorenal plexus?

An autonomic nerve network associated with the aorticorenal ganglia near the origins of the renal arteries.

2. Where is the aorticorenal plexus located?

Along the lateral aspects of the abdominal aorta, near the origins of the renal arteries.

3. Which sympathetic ganglia are associated with the aorticorenal plexus?

The paired aorticorenal ganglia.

4. How are the aorticorenal ganglia classified?

As prevertebral sympathetic ganglia.

5. Which thoracic splanchnic nerve provides a major sympathetic contribution to the aorticorenal ganglia?

The lesser thoracic splanchnic nerve, typically arising from T10 and T11.

6. Which additional thoracic splanchnic nerve may contribute fibers to the aorticorenal region?

The least thoracic splanchnic nerve, commonly arising from T12.

7. Where do preganglionic sympathetic fibers entering the aorticorenal ganglia synapse?

On postganglionic sympathetic neurons within the aorticorenal ganglia.

8. Which major autonomic plexus lies superior to the aorticorenal plexus?

The celiac plexus.

9. Which autonomic plexus surrounds the renal arteries and communicates with the aorticorenal plexus?

The renal plexus.

10. How do sympathetic fibers from the aorticorenal region reach the kidneys?

They travel through the renal plexuses along the renal arteries and their branches.

11. Which endocrine organs receive sympathetic fibers through networks associated with the aorticorenal region?

The suprarenal (adrenal) glands.

12. How do preganglionic sympathetic fibers supplying the adrenal medulla behave at the aorticorenal ganglia?

They pass through without synapsing and terminate on adrenal medullary chromaffin cells.

13. What is a major vascular effect of sympathetic stimulation reaching the kidneys through the renal plexus?

Constriction of renal blood vessels, potentially reducing renal blood flow.

14. Which renal cells are stimulated by sympathetic nerves to release renin?

Juxtaglomerular granular cells, primarily through beta-1 adrenergic receptors.

15. What anatomical feature makes the aorticorenal plexus relevant during surgery near the renal artery origins?

Its nerve fibers and ganglia lie close to the abdominal aorta and proximal renal vessels.