bench definition, bench meaning | English dictionary. bench. n an apparatus for experimentation in optics, typically consisting of an adjustable arrangement of light source, lenses, prisms, etc. bench.
3 Principal characteristics of cells that make up epithelium. -Cells are closely apposed-they adhere to one another via specialized cell junctions-Exhibit both structural and functional polarity-Epithelium creates a selective barrier between the external environment and the underlying connective tissue.î î î.Cells are closely apposed-they adhere to one another via specialized cell junctions-Exhibit both structural and functional polarity-Epithelium creates a selective barrier between the external environment and the underlying connective tissue. î î î.
1. B; The small ducts of exocrine glands are lined by simple cuboidal cells. 2. D; In the trachea pseudostratified epithelium, all cells rest on the basal lamina. Bladder transitional epithelium is stratified and therefore not all cells touch the basal lamina.3. A; Another function of stratified epithelia is to serve as a barrier.. D; In the trachea pseudostratified epithelium, all cells rest on the basal lamina.