Celiac Plexus Flashcards

Explore the celiac plexus, its prevertebral ganglia, splanchnic and vagal inputs, periarterial branches, and visceral innervation.

Card 1 of 28Question

What is the celiac plexus?

An extensive autonomic nerve network surrounding the celiac trunk and upper abdominal aorta.

In This Section

1. What is the celiac plexus?

An extensive autonomic nerve network surrounding the celiac trunk and upper abdominal aorta.

2. What is another name for the celiac plexus?

The solar plexus.

3. Where is the celiac plexus located?

In the retroperitoneum around the origin of the celiac trunk, anterior to the upper abdominal aorta.

4. At approximately which vertebral level is the celiac plexus centered?

Around T12 to L1, near the origin of the celiac trunk.

5. Which paired sympathetic ganglia are closely associated with the celiac plexus?

The right and left celiac ganglia.

6. How are the celiac ganglia classified anatomically?

As prevertebral sympathetic ganglia.

7. Which thoracic splanchnic nerves provide the principal preganglionic sympathetic input to the celiac ganglia?

The greater thoracic splanchnic nerves.

8. From which spinal segments does the greater thoracic splanchnic nerve typically receive sympathetic fibers?

T5 to T9, with anatomical variation.

9. Which additional thoracic splanchnic nerves may contribute sympathetic fibers to the celiac region?

The lesser thoracic splanchnic nerves.

10. Which cranial nerve provides parasympathetic fibers to the celiac plexus?

The vagus nerve (cranial nerve X).

11. Which vagal trunk provides a major celiac branch to the celiac plexus?

The posterior vagal trunk.

12. Do preganglionic vagal parasympathetic fibers synapse in the celiac ganglia?

No. They pass through and synapse in terminal or intramural ganglia near their target organs.

13. Where do preganglionic sympathetic fibers typically synapse in the celiac plexus?

On postganglionic sympathetic neurons in the celiac ganglia.

14. Which embryological division of the gastrointestinal tract receives autonomic fibers primarily through the celiac plexus?

The foregut.

15. Which major abdominal organs receive autonomic fibers through the celiac plexus and its branches?

The stomach, liver, gallbladder, pancreas, spleen, and proximal duodenum.

16. Along which three major arteries do branches of the celiac plexus distribute autonomic fibers?

The left gastric, common hepatic, and splenic arteries.

17. Which periarterial plexus carries autonomic fibers toward the stomach along the left gastric artery?

The left gastric plexus.

18. Which branch of the celiac plexus follows the hepatic arterial system?

The hepatic plexus.

19. Which periarterial nerve plexus follows the splenic artery toward the spleen and pancreas?

The splenic plexus.

20. Which abdominal autonomic plexus is connected to the celiac plexus inferiorly and distributes fibers to the midgut?

The superior mesenteric plexus.

21. Which autonomic plexuses associated with the kidneys communicate with the celiac plexus?

The aorticorenal and renal plexuses.

22. How do postganglionic sympathetic fibers from the celiac ganglia typically reach abdominal organs?

They travel along arteries within periarterial autonomic plexuses.

23. What is the general effect of sympathetic fibers distributed through the celiac plexus on gastrointestinal motility?

They inhibit gastrointestinal motility and peristalsis.

24. How does sympathetic stimulation through the celiac plexus affect splanchnic blood vessels?

It generally causes vasoconstriction of blood vessels supplying abdominal viscera.

25. Which visceral sensory fibers commonly travel through the celiac plexus toward thoracic splanchnic nerves?

Visceral pain afferent fibers from upper abdominal organs.

26. Where are the cell bodies of spinal visceral pain afferents passing through the celiac plexus located?

In the dorsal root ganglia of the corresponding thoracic spinal nerves.

27. What is the primary clinical purpose of a celiac plexus block?

Relief of severe visceral pain originating from upper abdominal organs.

28. Which abdominal malignancy is a common indication for celiac plexus neurolysis?

Pancreatic cancer causing severe upper abdominal visceral pain.