MIDDLE RECTAL ARTERY

 

 

ORIGIN: Anterior division of internal iliac artery.

 

COURSE/DISTRIBUTION: Arises from the anterior division of the internal iliac artery below the inferior vesical (or uterine), but more often a branch of it. It then runs downwards crossing superficially the pelvic splanchnic nerves and lying on obturator internus and the levator ani to reach the rectum, which it supplies. Its branches anastomose with the branches of the inferior rectal (from the internal pudendal artery) superior rectal (from inferior mesenteric artery) to complete the blood supply to the rectum. The close proximity of the rectal vessels with the genital ones (uterine, vaginal, inferior vesical) makes it possible for the rectum to share in part the closed circulation of the reproductive system, which is highly exaggerated in the female.

 

BRANCHES:

  • Rectal branches.

 


Pelvis male video          Layers of pelvis links       Electronic dissector    Structure locator

 
    
DIGITAL LOCATOR OF MALE PELVIS: Layer 1 Skin of pelvis- anterior abdominal wall and perineum). Layer 2- Superficial aspect of pelvis.  Layer 3 - intermediate dissection of male pelvis. Layer  4 - deep dissection of male pelvisCommon iliac vessel is located at layer 4 of pelvis. Rollover mouse to label; click to display age. Click blinking end page to display common iliac artery page Roll over mouse to unlabel. Layer  4 of male pelvis

 

 

 

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