BODY TISSUES - PowerPoint PPT Presentation

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BODY TISSUES

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BODY TISSUES TISSUES groups of cells that work together ORGANS- groups of tissues working together 4 Primary tissue types 1. EPITHELIUM- overall role is ... – PowerPoint PPT presentation

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Title: BODY TISSUES


1
BODY TISSUES
  • TISSUES groups of cells that work together
  • ORGANS- groups of tissues working together

2
4 Primary tissue types
  • 1. EPITHELIUM- overall role is covering
  • 2. CONNECTIVE- overall role is support
  • 3. NERVOUS- overall role is control
  • 4. MUSCLE- overall role is movement

3
EPITHELIAL TISSUE
  • the lining, covering, and glandular tissue of the
    body
  • nearly all substances given off or received by
    the body must pass through epithelium
  • functions- protection, absorption, filtration and
    secretion

4
Characteristics of Epithelium
  • -fit closely together to form a continuous sheet
  • -always has one surface exposed called the APICAL
    SURFACE
  • -lower surface rests on the BASEMENT MEMBRANE- a
    structureless material secreted by the cells
  • -depend on diffusion from capillaries in the
    underlying tissue for food and oxygenNO DIRECT
    BLOOD SUPPLY
  • - regenerate easily if well nourished

5
2 types of layer classification
  • SIMPLE- a single layer of epithelial cells
  • STRATIFIED- more than one cell layer of
    epithelial

6
3 classifications of shape
  • 1. SQUAMOUS- flattened
  • 2. CUBOIDAL- cube shaped
  • 3. COLUMNAR- column shaped

7
TYPES OF EPITHELIA
Types of epithelium Description/function Examples in the body
Simple Squamous
Simple cuboidal
Simple Columnar
Pseudostratified columnar (ciliated)
8
TYPES OF EPITHELIA
Types of epithelium Description/function Examples in the body
Stratified Squamous
Stratified Cuboidal/ columnar
Transitional
Glandular
9
Simple squamous
10
Simple Cuboidal
11
Simple Columnar
12
Pseudostratified columnar
13
Stratified Squamous
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