As of May 2011, plasterers and stucco masons earned an average of $41,750 per year and $20.07 per hour. The median of all salaries reported to the Bureau of Labor Statistics was $36,830 per hour.
The trachea is lined by pseudostratified squamous epithelium. Epithelium lines body cavities and surfaces. Pseudostratified squamous epithelium is pseudostratified because it is only one cell layer thick, yet it appears to be stratified. In reality, every cell touches the basement membrane.
This protective epithelium is partially keratinized on the hard palate and gums and on the tips of filiform papillae of the tongue. Elsewhere in the oral cavity, esophagus, and anal canal the epithelium is non-keratinized. Along the lining of the stomach, small intestine, and colon, the epithelium is simple columnar.