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Histology Review
Review of Epithelial Tissues
| Term | Definition |
|---|---|
| Two ways that epithelial tissue is classified | (1) Number of layers (2) Shape of cell |
| Structure of Simple Columnar | Looks like one layer of rectangular shaped cells |
| Location of Simple Columnar | Small intestines |
| Function of Simple Columnar | Absorption |
| Structure of Simple Squamous | Looks like one layer of flat cells |
| Location of Simple Squamous | Air sacs of the lungs |
| Function of Simple Squamous | Thin layers allow for rapid diffusion of gases |
| Structure of Simple Cuboidal | One layer of cube-shaped cells |
| Function of Simple Cuboidal | Secretion |
| Location of Simple Cuboidal | Kidneys; glands |
| Structure of Stratified Squamous | Multiple layers of flat cells |
| Function of Stratified Squamous | Protection |
| Location of Stratified Squamous | Outer layer of skin |
| Structure of Pseudostratified Columnar | "False layers"; one layer of rectangular shaped cells with long cilia |
| Location of Pseudostratified Columnar | Respiratory tract |
| Function of Pseudostratified Columnar | Sweeping mucous through respiratory tract |
| Structure of Transitional | Multiple layers of tissue with top layer containing scalloped edges |
| Function of Transitional | Stretch to allow bladder to expand and not cause urine leakage |
| Location of Transitional | Bladder; urethra; ureters |