Stomach Region, layers, and features + rugae
Mucosa: The innermost lining, containing glands that release digestive juices.
Submucosa: Supports the mucosa and contains blood vessels, lymphatic vessels, and nerves.
Muscularis externa: Thick muscles responsible for stomach movement.
Serosa: The outermost layer, covered by a membrane.
Rugae - series of ridges produced by folding of the internal surface of the stomach