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From the esophagus to the anus, the digestive is basically a tube very similar to other tubular organs in the body. All such tubular organs are composed of several tissue layers arranged around a lumen. In a "generic" tubular organ, these layers are as follows (from the lumen to the ablumenal layer).
Submucosa
The urinary and digestive systems are not connected in a single lumen. The digestive system ends with the anus.
called lumen
The subcutaneous oil glands in the scalp secretes via holocrine. Holocrine indicates a membrane rupture which destroys the cell and results in the secretion into the lumen.
The digestive system features lumen in the gastrointestinal tract. Absorption is the passage of digested end products from the lumen of the GI tract through the mucosal cells into the blood or lymph.
It lines the lumen of the vessels, and is a thin layer of endothelium.
Blood vessels do not carry digestive juices to the digestive system. Digestive juices are either secreted directly into the lumen of the digestive tract, or are carried by ducts, as with bile and pancreatic juice.
endothelium
longitudinal muscle
The gastric lumen is the watery space that fills the stomach. Digestive enzymes and juices are secreted from the oxyntic mucosa and Pyloric Gland Area into the gastric lumen. The Fundus, Body and Anterum are the "sections" of the stomach.
The portion of the cell exposed to the lumen. The layer of plasma membrane on the apical side (side towards the lumen) of the epithelial cells in a body tube or cavity, separated from the basolateral membrane by the zonula occludens.- thefreedictionary.com