EPITHELIUM · 2021. 3. 1. · 4.NervousTissue. 1. Covering, lining, and protecting surfaces...
Transcript of EPITHELIUM · 2021. 3. 1. · 4.NervousTissue. 1. Covering, lining, and protecting surfaces...
![Page 1: EPITHELIUM · 2021. 3. 1. · 4.NervousTissue. 1. Covering, lining, and protecting surfaces (skin/epidermis) 2. Absorption (intestinal lining) 3. Secretion (glands) Characteristic](https://reader036.fdocuments.us/reader036/viewer/2022070217/611f27890a301768cd46f84a/html5/thumbnails/1.jpg)
EPITHELIUM
![Page 2: EPITHELIUM · 2021. 3. 1. · 4.NervousTissue. 1. Covering, lining, and protecting surfaces (skin/epidermis) 2. Absorption (intestinal lining) 3. Secretion (glands) Characteristic](https://reader036.fdocuments.us/reader036/viewer/2022070217/611f27890a301768cd46f84a/html5/thumbnails/2.jpg)
Major tissue types:
1. Epithelium
2. Connective Tissue.
3. Muscle Tissue.
4. Nervous Tissue.
![Page 3: EPITHELIUM · 2021. 3. 1. · 4.NervousTissue. 1. Covering, lining, and protecting surfaces (skin/epidermis) 2. Absorption (intestinal lining) 3. Secretion (glands) Characteristic](https://reader036.fdocuments.us/reader036/viewer/2022070217/611f27890a301768cd46f84a/html5/thumbnails/3.jpg)
1. Covering, lining, and protecting surfaces (skin/epidermis)
2. Absorption (intestinal lining)
3. Secretion (glands)
![Page 4: EPITHELIUM · 2021. 3. 1. · 4.NervousTissue. 1. Covering, lining, and protecting surfaces (skin/epidermis) 2. Absorption (intestinal lining) 3. Secretion (glands) Characteristic](https://reader036.fdocuments.us/reader036/viewer/2022070217/611f27890a301768cd46f84a/html5/thumbnails/4.jpg)
Characteristic ■ Supported by the underlying connective tissue.
■ Innervated (has nerves).
■ Avascular (no blood vessels); blood supply is in supporting connective tissue.
■ High regeneration capacity.
■ Polarized tissue.
![Page 5: EPITHELIUM · 2021. 3. 1. · 4.NervousTissue. 1. Covering, lining, and protecting surfaces (skin/epidermis) 2. Absorption (intestinal lining) 3. Secretion (glands) Characteristic](https://reader036.fdocuments.us/reader036/viewer/2022070217/611f27890a301768cd46f84a/html5/thumbnails/5.jpg)
![Page 6: EPITHELIUM · 2021. 3. 1. · 4.NervousTissue. 1. Covering, lining, and protecting surfaces (skin/epidermis) 2. Absorption (intestinal lining) 3. Secretion (glands) Characteristic](https://reader036.fdocuments.us/reader036/viewer/2022070217/611f27890a301768cd46f84a/html5/thumbnails/6.jpg)
![Page 7: EPITHELIUM · 2021. 3. 1. · 4.NervousTissue. 1. Covering, lining, and protecting surfaces (skin/epidermis) 2. Absorption (intestinal lining) 3. Secretion (glands) Characteristic](https://reader036.fdocuments.us/reader036/viewer/2022070217/611f27890a301768cd46f84a/html5/thumbnails/7.jpg)
Basement membrane (BM)(Epithelium and CT0
■ Is a thin extracellular sheet under epithelium.
■ Synthesized by epithelium and CT
■ Support, attach, and filter.
■ Two layers
1. Basal lamina (Collagen IV, laminin, and Nidogen+perlacan)
2. Reticular lamina (Collagen III and VII)
Basement membrane
CT
Epithelium
![Page 8: EPITHELIUM · 2021. 3. 1. · 4.NervousTissue. 1. Covering, lining, and protecting surfaces (skin/epidermis) 2. Absorption (intestinal lining) 3. Secretion (glands) Characteristic](https://reader036.fdocuments.us/reader036/viewer/2022070217/611f27890a301768cd46f84a/html5/thumbnails/8.jpg)
Basement membrane
![Page 9: EPITHELIUM · 2021. 3. 1. · 4.NervousTissue. 1. Covering, lining, and protecting surfaces (skin/epidermis) 2. Absorption (intestinal lining) 3. Secretion (glands) Characteristic](https://reader036.fdocuments.us/reader036/viewer/2022070217/611f27890a301768cd46f84a/html5/thumbnails/9.jpg)
Basement membrane
Electron microscope (TEM) Picrosirius-hematoxylin
![Page 10: EPITHELIUM · 2021. 3. 1. · 4.NervousTissue. 1. Covering, lining, and protecting surfaces (skin/epidermis) 2. Absorption (intestinal lining) 3. Secretion (glands) Characteristic](https://reader036.fdocuments.us/reader036/viewer/2022070217/611f27890a301768cd46f84a/html5/thumbnails/10.jpg)
Types of Epithelial tissue