What organ covers the digestive organs?
I'm not sure how to interpret the question.
The entire is called the Digestive System and is complete, fairly complex, set of separate organs joined by various ducts of their own, and the Circulatory System.
Some of these organs, especially the intestines, are held within a membranous bag called the Peritoneum - if that's the cover you mean.
Cells are the building blocks of organs. Cells come together to form tissue and likewise tissue forms organs. Organs with similar function then create an organ system e.g. the digestive system is an organ system that includes such organs as the stomache and any other organs that contribute to digestive process such as the liver, pancreas, intestines, etc.
A group of organs working together is called a system. An example is a cardiovascular system, the organs working in a cardiovascular system are the heart, the blood , and the blood vessels. Another example is the digestive system, which contains mouth, gullet, stomach, small intestine, large intestine and retum, basically an organ system. a group of organs that work together is called a system An organ system. Such as your respiratory system, a group…
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).