The Appendix



Position/location  

Usually in the right iliac fossa. Its position varies. Could be on the left side in situs inversus.

  • Retrocecal
  • Retrocolic
  • Subhepatic
  • Pelvic
   

Relations  

Posteriorly : psoas major

Medial (post): ureters and iliac vessels

Anteriorly : caecum

Superiorly : coils of ileum (and ascending colon).

Anteriorly : may be separated from the anterior abdominal wall by intestines.

   

Peritoneal relations

Surrounded by peritoneum, and has mesoappendix.

   

blood supply
 

Appendicular branch of ileocolic artery a branch of the superior mesenteric artery.

The appendicular tributary of ileocolic vein takes the blood to the superior mesenteric vein.

   

Lymphatics

Nodes in the mesoappendix ileocolic artery.

   

Nerves

Parasympathetic : vagus

Sympathetic : superior mesenteric plexus

   

Home | Project Anatomy | Gross Anatomy | Topic Index | Chapter 30

Chapter 32: The Peritoneum and the Organs of the Gastrointestinal System