Anatomy diagram of anus and rectum

Marsupialization of the skin edges can be performed to prevent early closure. Our digestive system is like a long tube, with different segments doing different jobs. Eur J Anat 22 1 —73 Google Scholar Saliva helps to lubricate food and contains chemicals enzymes that start chemically digesting your meal. Other causes of fistulas include trauma or surgery, Crohn's disease, fissures, carcinoma, radiation therapy, or chlamydial infections. Although peristalsis, pulsation, breathing and susceptibility from bowel air may cause image artefacts, in optimal conditions, the layers of the rectal wall should be clearly defined.

Waste products from the hemolymph diffuse into the Malpighian tubules and are then converted to uric acid. By Rosie McCall 07 Nov , The semi-solidified waste empties into the hindgut and becomes part of the fecal pellet. The first is the urethra and it can be found part way between the clitoris and the vagina, as you can see in the diagram below. By: Tim Taylor. Most insects have one pair of spiracles per body segment. One user, a nurse, recalls how a year-old patient 25!

Most of the tracheal tubes are reinforced by taenidia, ridges that run spirally around the tubes to keep them from collapsing. Like all insects, this pseudo bug has three distinct body regions, the head, thorax, and abdomen, marked by the letters A, B, and C respectively. Instead, the muscles in the vagina expand and relax when aroused and tighten again post-intercourse. This organ empties directly into the alimentary canal and connects at the junction between the midgut and hindgut. One user, a nurse, recalls how a year-old patient 25!