Home > Anatomy > Tissues > Epithelium Terms and Definitions
Epithelium
| Definition: |
One or more layers of EPITHELIAL CELLS, supported by the basal lamina, which covers the inner or outer surfaces of the body. |
| Notes: |
usually NIM with specific organ IM |
| Also Called: |
Mesothelium |
Epithelium Categories.
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Basement Membrane - Ubiquitous supportive tissue adjacent to epithelium and around smooth and striated muscle cells. This tissue contains intrinsic macromolecular components such as collagen, laminin, and sulfated proteoglycans. As seen by light microscopy one of its subdivisions is the basal (basement) lamina. |
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Endothelium - A layer of epithelium that lines the heart, blood vessels (ENDOTHELIUM, VASCULAR), lymph vessels (ENDOTHELIUM, LYMPHATIC), and the serous cavities of the body. |
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Epidermis - The external, nonvascular layer of the skin. It is made up, from within outward, of five layers of EPITHELIUM: (1) basal layer (stratum basale epidermidis); (2) spinous layer (stratum spinosum epidermidis); (3) granular layer (stratum granulosum epidermidis); (4) clear layer (stratum lucidum epidermidis); and (5) horny layer (stratum corneum epidermidis). |
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Urothelium - The epithelial lining of the URINARY TRACT. |
Epithelium Definitions and Terms
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