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Anatomical Relations of the Rectum & Anal Canal - Coggle Diagram
Anatomical Relations of the Rectum & Anal Canal
Peritoneal Reflections & Pouches
Lateral Reflection
Forms the Pararectal Pouches
Anterior Reflection (Pouch of Douglas / Rectogenital Pouch)
In Females
Rectouterine Pouch (Pouch of Douglas)
In Males
Rectovesical Pouch
Coverage
Peritoneum covers only the upper part of anterior and lateral surfaces. Posterior surface and lower 1/3 are subperitoneal (extraperitoneal)
Rectal Compartment (The Rectal Lodge)
Fibrous sheath enclosing the subperitoneal rectum, bounded by 4 fascial boundaries:
Laterally
:
Posterior portion of the Sacrorectogenitopubic Laminae
Posteriorly:
Retrorectal Fascia
Anteriorly :
In Males
Prostatoperitoneal lamina (Denonvilliers’ Fascia)
In Females
Rectovaginal Septum
Pelvic Rectum Relations with Adjacent Organs
Posterior Wall (Retrorectal Space)
Middle sacral vessels
Sacral sympathetic trunks
Piriformis muscle
Sacrum, and Coccyx
Lateral Walls
Pelvic (sigmoid) colon, Small-intestinal loops, Ureters, Internal iliac vessels (plus Ovaries and Uterine tubes in females)
Anterior Wall
In Females
Vagina
Uterus
In Males
Bladder, Ureters, Vas deferens, Seminal vesicles, Prostate, Urethra
Anal Canal (Perineal Rectum) Relations