The interactive dog atlas · Organs · Pelvis

Rectum rectum

The rectum is the last part of the large intestine, in the pelvis. It lies above the urinary bladder and the prostate (in the male) or the uterus (in the female) and ends in the anal canal.

Educational material, not a diagnostic tool. Written by the Mantrailing România team from veterinary sources we read. Updated 14.11.2026.

Dog in left lateral view — exterior, muscles, skeleton and organs Vector study after the Ellenberger, Baum and Dittrich plates: a standing dog, head to the left, deep chest and digitigrade limbs. The four layers use the same contour: exterior with body regions, superficial muscles, skeleton and organs.
Rectum on the atlas drawing, "Organs" layer, with the neighbouring structures. Left lateral view, after the Ellenberger, Baum and Dittrich plates.

Where it is

In the pelvis, dorsally, from the pelvic inlet to the anal canal.

Layer
Organs
System
Digestive system
Region
Pelvis

What it is and what it does

The rectum is the last part of the large intestine, the continuation of the descending colon into the pelvic cavity, where it lies dorsal to the urinary bladder and the prostate (in the male) or the uterus and vagina (in the female) and ends in the anal canal. It is held by the mesorectum and belongs to the pelvic viscera, together with the bladder and the urethra.

Worth remembering

It belongs to the pelvic organs, together with the bladder and the urethra.

Names

Guides it appears in