Which organs have rugae

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News trends on Rugae. Blogs on Rugae. Definitions of Rugae. Patient resources on Rugae. Discussion groups on Rugae. The area where the esophagus joins the stomach is called the gastroesophageal GE junction. The first part of the small intestine is called the duodenum, and it is this part that is connected to the stomach.

The stomach is surrounded by a large number of lymph nodes. The stomach is made up of several layers of tissue: The mucosa mucous membrane is the inner lining of the stomach. When the stomach is empty the mucosa has a ridged appearance. These ridges rugae flatten out as the stomach fills with food. The next layer that covers the mucosa is the submucosa. It is made up of connective tissue that contains larger blood and lymph vessels, nerve cells and fibres.

The muscularis propria or muscularis externa is the next layer that covers the submucosa. It is the main muscle of the stomach and is made up of 3 layers of muscle. The serosa is the fibrous membrane that covers the outside of the stomach. The serosa of the stomach is also called the visceral peritoneum.

Certain surgeries may also involve exposure of the folds inside the stomach. As one might expect from the explanation about rugae in the stomach, other organs which need to be able to expand and contract have similar folds. The gallbladder and urinary bladder are both wrinkled when they are empty, expanding and flattening out as they fill up. The back of the hard palate also has a series of ridges created by folds.

Folds can also be seen in the genitals. The vagina has a series of rugae which allow it to expand and contract, perhaps most notably for the purpose of delivering a baby. The scrotum is also covered in a series of folded ridges which facilitate the regulation of temperature in the testes.