Mastic Carvedwood Siding Colors. Description: Mastic Carvedwood 44 is a a cedar lap siding that is available in 6 different profiles, 2 finishes that includes smooth and wood grain and 26 colors selections.
These folds give the stomach its well-known ability to enlarge when engorged with food. On the outermost layer of these folds you may see a thin line of material. This is mucus which helps protect the tissues below from the harsh environment of the stomach. The innermost layer is a lining of simple columnar epithelium (labeled in the high magnification image). This type of epithelium provides the greatest surface area for abosrption or secretion. In the stomach the epithelial cells exposed to the lumen are primarily constructed to resist digestion by the lumen contents. The epithelial layer forms depressions called gastric glands or pits. Within these pits are mucous secreting cells, parietal cells which secrete HCL, and chief cells which secrete pepsinogen.
The gastric mucosa is the mucous membrane layer of the stomach which contains the glands and the gastric pits.In humans it is about 1 mm thick and its surface is smooth, soft, and velvety.he epithelial lining of the gland ducts is of the same character and is continuous with the general epithelial lining of the stomach. An important iodine concentration by sodium-iodide symporter (NIS) is present in mucinous cells of surface epithelium and gastric pits of the fundus and pyloric part of the stomach.