Anal canal anatomy. It is the final part of the large intestine
and the gastrointestinal tract. Its structure includes the internal
and external sphincters to control defecation. It has anal glands
for lubrication and anal columns. It is a key functional unit in
the elimination of waste.
Anatomy of the Large Intestine. explains the final part of the digestive system, where water and electrolytes are absorbed and feces are formed, including the cecum and all colon segments.
Celiac disease is an autoimmune disorder in which gluten
damages the intestinal villi. This reduces the absorption
of nutrients and causes digestive symptoms and nutritional
deficiencies.
The blood supply of the stomachcomes mainly from the celiac trunk, through arteries such as the left and right gastric arteries, which provide oxygen and nutrients to stomach tissues.