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Epithelial Tissue
| Question | Answer |
|---|---|
| Tight junction | Membranes between cells fuse and merge. Located among cells that form linings, sheet like layers |
| Desmosomes | Located among Outer skin layer Spot welds Structural reinforcement |
| Gap junctions | Located in cardiac muscle cells Tube like channels between cells Molecules can move between cells |
| Simple squamous | Single layer Filtration, diffusion, osmosis; covers surface Squamous shape-thin ,flat Linings of body cavity, lungs, blood vessels |
| Simple cuboidal | Single layer Secretion, protection Kidney tubules, glands |
| Simple columnar | Single layer Protection, secretion , absorption Linings of digestive tract Different cause of cilia |
| Stratified squamous | Multi-layer Protection Outermost layers- squamous cells Inner layers- cuboidal or columnar Linings of mouth, esophagus, skin |
| Stratified cuboidal | Multi-layer Protection Linings of ducts of mammary glands, sweat glands, salivary glands, and pancreas |
| Stratified columnar | Multi-layer Protection , secretion Part of the male urethra and linings of larger ducts of excretory glands |
| Transitional epithelium | Multi – layer Stretchability, protection Inner lining of urinary bladder and linings of ureters and part of urethra. |
| Pseudostratified columnar epithelium | Single layer Protection, secretion, movement of mucus Linings of respiratory passages |
| Endocrine glands | Secrete into tissue fluid or blood |
| Exocrine glands | Secrete into ducts that open onto a surface |