In a model of the wall of the intestine the mucosa is 0.6 mm thick, the submucosa 0.4 mm, the…
Contributed by StemPy LabTry it on paper first. A hint, the key idea and the worked solution are here when you need them.
In a model of the wall of the intestine the mucosa is thick, the submucosa , the muscularis and the serosa .
- What is the thickness of the wall?
- What per cent of the wall is the muscularis?
- After a long illness, the muscularis becomes thick and the others do not change. What per cent of the wall is the muscularis now?
Need a reminder? The key ideaShow
An organ is a structure made of two or more tissues that are arranged to do a particular job. The stomach, for example, has epithelial, connective, muscular and neural tissue. Organs that work together form an organ system. The levels of organisation of an animal run from cell to tissue, organ, organ system and organism. The human body is usually described as having eleven organ systems. In the wall of a hollow organ such as the intestine the layers are the mucosa, the submucosa, the muscularis and the serosa.
The worked solution
Have you tried it?
Work it out on paper first. It is fine to get stuck or make a mistake: that is how we learn. When you are ready, go through the solution one step at a time, and check each step against your own.
Given. Layers: , , and .
Plan. Add the layers, and take the share of the muscularis.
Step 1. The wall. .
Step 2. The share. .
Step 3. The new share. The wall is now . Share: .
Answer: ; ; .
Watch out. The thicknesses are made up for the exercise. Real walls vary from organ to organ.
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