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 following types of epithelial tissues are covered in this activity: 1. Simple squamous epithelial tissue (lungs) 2. Simple cuboidal epithelial tissue (kidneys) 3. Simple columnar epithelial tissue (small intestine) 4. Pseudostratified (ciliated) columnar epithelial tissue (trachea lining) 5.Stratified squamous epithelial tissue (mouth lining) 6. Stratified cuboidal epithelial tissue (salivary glands, sweat glands) 7.imple cuboidal epithelial tissue (kidneys) 3. Simple columnar epithelial tissue (small intestine) 4. Pseudostratified (ciliated) columnar epithelial tissue (trachea lining) 5. Stratified squamous epithelial tissue (mouth lining) 6. Stratified cuboidal epithelial tissue (salivary glands, sweat glands) 7.