Please enable JavaScript.

Coggle requires JavaScript to display documents.

Colonic Vascularization, Innervation & Exploration - Coggle Diagram

- - - - Cecum → Proximal 2/3 Transverse
    - - Abdominal Aorta at L1
    - - Preduodenal & Prepancreatic
    - - Right Colic Artery
        
        Ascending & descending branches for ascending colon
      - Ileocolic Artery
        
        Terminal Ileal Branch & Right Colic Branch (Ascending colon border)
        
        Appendicular Artery (Supplies appendix)
        
        Anterior & Posterior Cecal Branches
      - Middle Colic Artery
        
        Right & left branches within transverse mesocolon
  - - - Distal 1/3 Transverse → Sigmoid
    - - Abdominal Aorta at L3
    - - Continues as Superior Rectal A. at S3
    - - Left Colic Artery
        
        Descending Branch
        
        Supplies descending colon
        
        Ascending Branch
        
        Runs toward transverse colon → anastomoses with the left branch of the middle colic artery to form the Arcade of Riolan (Transverse Paracolic Arcade)
      - Sigmoid Arterial Trunk
        
        Superior, Middle, and Inferior Sigmoid Arteries
- - - - Ascends anterior to D3/uncinate process
        
        Joins splenomesenteric trunk behind pancreatic isthmus to form the Portal Vein
  - - - Ascends to the left
        
        Drains into the Splenic Vein (contributing to the splenomesenteric trunk)
- - - - Intermediate (Colic.A)
        
        Principal (SMA/IMA Origin)
        
        Central Nodes
- - - - Superior Mesenteric Plexus
        
        Right colon (Midgut)
      - Inferior Mesenteric Plexus
        
        Left colon (Hindgut)
  - - - Located between longitudinal and circular muscular layers (controls motility)
    - - Located within submucosa (controls secretions/blood flow)