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. Perichondrium. 2. Ring of hyaline cartilage. 3. Adipose (fat) cells. Close-Up View. This slide shows a stained section of the trachea (windpipe). Note the rings of hyaline cartilage embedded in the walls of the trachea that provide support and help to maintain an open airway.ing of hyaline cartilage. 3. Adipose (fat) cells. Close-Up View. This slide shows a stained section of the trachea (windpipe). Note the rings of hyaline cartilage embedded in the walls of the trachea that provide support and help to maintain an open airway.