No it's made by idiots like you!
The Esophagus has 9 specific layers, if you are healthy. They are: mucosa, saliva, lamina propria, smooth muscle, papillae, muscularis extenma, striated muscle, and adventa.
visceral smooth muscle
Smooth Muscle - Muscularis Mucosa
Smooth muscle is involuntary tissue. It is not controlled by the brain. Smooth muscle forms the muscle layers in the walls of organs such as the lower part of the esophagus, stomach and intestines.
Smooth muscle tissue is located in the wall of the digestive tract.
Smooth muscle tissue has longitudinally and circularly arranged layers.
smooth muscle
The walls of the alementary canal, which is from the esophagus to the large intestine, comprise of 4 layers. The are: Mucosa, Submucosa, Muscularis Externa, and the serosa. The Mucosa is the innermost, while the serosa is the outermost. The Muscularis externa is the muscle layer, and typically made up of inner circular layer and outer longitudinal layer or smooth muscle cells. The submucosa is soft connective tissue containing blodd vessels, nerve endings from the intrinsic nerve plexus, and lymph nodules as well as lymph vessels.
The digestive system has smooth muscle through out it, and they help move the food.
Outer = longitudinal smooth muscle Middle= circular smooth muscle Innermost= longitudinal smooth muscle
The four histological layers of the gut are the mucosa, submucosa, muscularis externa, and serosa (or adventitia). The mucosa is the innermost layer, containing epithelial cells and glands. The submucosa provides support and contains blood vessels and nerves. The muscularis externa is responsible for peristalsis, and the serosa (or adventitia) is the outermost layer providing protection and support.
The muscularis mucosa separates the lamina propria from the submucosa. It produces local movements of the mucosa. For example, twitching of this muscle layer dislodges food particles that have adhered to the mucosa.