EPITHELIUM

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EPITHELIUM by Mind Map: EPITHELIUM

1. TYPES OF EPTHELIA

1.1. COVERING

1.1.1. EXTERNAL SURFACE

1.1.1.1. EPIDERMIS OF SKIN

1.1.2. INTERNAL SURFACE

1.1.2.1. BODY CAVITIES

1.1.2.2. TRACTS/TUBES

1.2. GLANDULAR

2. CHARACTERISTIC

2.1. CELL JUNCTION PRESENT

2.2. AVASCULAR

2.3. AVASCULAR

3. FUNCTIONS

3.1. PROTECTION

3.2. ABSOPRTION

3.3. FILTRATION

4. CLASSIFICATION OF COVERING EPITHELIA

4.1. NO OF CELL LAYER

4.1.1. PRESENCE OF SURFACE SPECIALIZATION

4.1.2. STRATIFIED

4.1.3. PSEUDOSTRATIFIED

4.2. SHAPE OF CELL

4.2.1. SQUAMOUS

4.2.2. CUBOIDAL

4.2.3. COLUMNAR

4.3. PRESENCE OF SURFACE SPECIALIZATION

4.3.1. CILIA

4.3.2. KERATIN

5. SIMPLE EPITHELIUM

5.1. SIMPLE SQUAMOUS EPITHELIUM

5.1.1. FLATTEN CELL WITH DISC-SHAPE NUCLEI

5.1.2. FUNCTION

5.1.2.1. ALLOW PASSAGE BY DIFFUSION AND FILTRATION

5.1.2.2. SECRETES LUBRICATING SUBSTANCES

5.2. SIMPLE CUBOIDAL EPITHELIUM

5.2.1. ROUND NUCLEUS IN CENTRE

5.2.2. FUNCTION

5.2.2.1. ABSOPRTION

5.2.2.2. SECRETION

5.3. SIMPLE COLUMNAR EPITHELIUM

5.3.1. OVAL NUCLEI TOWARDS BASE

5.3.2. FUNCTION

5.3.2.1. ABSOPRTION

5.3.2.2. SECRETION

5.3.3. FOUND IN HIGHLY ABSOPRTIVE SURFACES

5.3.4. SIMPLE CILIATED COLUMNAR EPITHELIUM

5.4. PSEUDOSTRATIFIED EPITHELIUM

5.4.1. CELLS TALL AND SHORT WITH NUCLEI DIFF LOCATION

5.4.2. FUNCTION

5.4.2.1. CELLS TALL AND SHORT WITH NUCLEI DIFF LOCATION

5.4.2.2. SECRETION

6. STRATIFIED EPITHELIUM

6.1. STRATIFIED SQUAMOUS

6.1.1. KERATINIZED

6.1.2. NON KERATINIZED

6.1.3. FUNCTION

6.1.3.1. PROTECTION

6.2. STRATIFIED CUBOIDAL

6.2.1. FUNCTION

6.2.1.1. PROTECTION

6.3. STRATIFIED COLUMNAR

6.3.1. FUNCTION

6.3.1.1. PROTECTION

6.3.1.2. SECRETIONS

6.3.1.3. SECRETIONS

6.4. TRANSITIONAL

6.4.1. FUNCTION

6.4.1.1. ALLOW GREAT DEGREE OF DISTENSION

7. CELL JUNCTION

7.1. TIGHT JUNCTION/ZONULA OCCLUDENS

7.2. ZONULA ADHERENS

7.3. GAP JUNCTIONS

7.4. DESMOSOME/MACULA ADHEREN

7.5. FUNCTION

7.5.1. SITES OF ADHESION

7.5.2. AS SEALS

7.5.3. PROVIDE MECHANISM FOR COMMUNICATION BETWEEN ADJACENT CELL