Abdominal organ innervation and blood supply

Question 1

Stomach

Answer 1

• PSN: CN X -> celiac plexus
• SN: Thoracic splanchnic -> greater splenic -> celiac ganglion
• Celiac artery

Question 2

Duodenum

Answer 2

• PSN: CN X -> celiac ganglion -> superior mesenteric ganglion
• SN: Thoracic splanchnic -> superior mesenteric ganglion
• Gastroduodenal artery

Question 3

Jejunum

Answer 3

• PSN: CN X -> celiac ganglion -> superior mesenteric ganglion
• SN: Thoracic splanchnic -> superior mesenteric ganglion
• Superior mesenteric artery

Question 4

Ileum

Answer 4

PSN: Medulla → CN X → Celiac ganglion → superior mesenteric ganglion
SN: Thoracic splanchnics (T10-12) → Superior mesenteric ganglion
-Superior mesenteric artery

Question 5

Colon

Answer 5

PSN: Medulla → CN X → Celiac ganglion → superior mesenteric ganglion
(Distal colon = pelvic splanchnic nerves to inferior hypogastric plexus)
SN:Lumbar splanchnics (L1-L2) → Inferior mesenteric ganglion
-Superior and inferior mesenteric arteries

Question 6

Liver

Answer 6

PSN: CN X → Celiac ganglion
SN:Thoracic splanchnics (T5-12) → Greater splenic nerve → celiac ganglion
-Hepatic artery and hepatic portal vein

Question 7

Gallbladder

Answer 7

PSN: Vagus → Celiac ganglion
SN:Thoracic splanchnics (T5-12) → Greater splenic nerve → celiac ganglion
-Cystic artery

Question 8

Pancreas

Answer 8

PSN:Vagus nerve → postganglionic fibres
SN: Celiac & superior mesenteric plexuses
Celiac and superior mesenteric arteries

Question 9

Esophagus

Answer 9

PSN: CN X
SN: Esophageal plexus
Thyroid and bronchial arteries