Rectum Anatomy

The rectum is supplied by the superior rectal artery branch of the inferior mesenteric artery middle rectal artery branch of the internal iliac artery and inferior rectal artery branch of the internal pudendal artery from the internal iliac artery. Middle rectal artery branch of the internal iliac artery.

Anatomy Of Rectum Youtube

Ulcerative colitis one form of inflammatory bowel disease that causes ulcers that affect the rectum.

Rectum anatomy. Inferior rectal artery branch of the internal pudendal artery. Tough tissue called fascia surrounds the anus and attaches it to nearby structures. The peritoneum firmly attaches the rectum to the sacrum.

Deep to the mucosa is the submucosa layer that supports the other layers of the rectum. If the defecation process is delayed it may result in constipation. Next is the muscularis layer which contains layers of visceral smooth muscle.

Rectum terminal segment of the digestive system in which feces accumulate just prior to discharge. The description in this topic is from below upwards as that is how this region is usually examined in clinical practice. The anus and anal canal.

This may be episodic over a persons lifetime. The rectum is the last part of the large intestine. Other diseases of the rectum include.

The expansion of the rectal walls causes the stretch receptors within the walls to stimulate the urge to defecate. The rectum is an expandable organ for the temporary storage of feces. The anus starts at the bottom of the rectum the last portion of the colon large intestine.

A muscular sheet called the pelvic diaphragm runs perpendicular to the juncture of the rectum and anal canal. The anorectal line separates the anus from the rectum. In the context of mesenteric ischemia the upper rectum is sometimes referred to as sudaks point and is of.

The rectum ends about 5 centimeters below the tip of the coccyx where it becomes the anal canal. This results in the feces entering the canal. The venous blood drains through the correspondent veins into.

The rectum receives arterial supply through three main arteries. It is located within the pelvis and is the continuation of the sigmoid colon after the rectosigmoid junction and continues as the anal canal at the anorectal angle created by puborectalis. The anal canal is the most terminal part of the lower gi tractlarge intestine which lies between the anal verge anal orifice anus in the perineum below and the rectum above.

The rectum lies next to the sacrum and generally follows its curvature. When the storage site becomes full the intrarectal pressure causes the anal canal walls to dilate and expand. Histology the mucosa forms the innermost layer of the rectum that is in contact with fecal matter.

Superior rectal artery terminal continuation of the inferior mesenteric artery. Finally the serosa forms the. The anus is the opening where the gastrointestinal tract ends and exits the body.

The rectum is continuous with the sigmoid colon and extends 13 to 15 cm 5 to 6 inches to the anus.

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