CONNECTIVE TISSUE - PowerPoint PPT Presentation

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CONNECTIVE TISSUE

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CONNECTIVE TISSUE-is found everywhere in the body-is the most abundant type of tissue – PowerPoint PPT presentation

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Title: CONNECTIVE TISSUE


1
CONNECTIVE TISSUE
  • -is found everywhere in the body
  • -is the most abundant type of tissue

2
CONNECTIVE TISSUE
  • Common Characteristics-
  • 1. most are well vascularized (have a good blood
    supply) exceptions are tendons and ligaments
  • 2. functions include protecting, supporting, and
    binding together other tissues
  • 3. contain EXTRACELLULAR MATRIX

3
CONNECTIVE TISSUE
  • Extracellular Matrix- secreted by the cell-the
    more matrix the stronger the tissue- ( can vary
    from strong bone to clear lens of the eye)
  • CONTAINS
  • 1. Water
  • 2. Various proteins- glue
  • 3. Polysaccharides- rigidity
  • 4. 3 main Types of fibers

4
CONNECTIVE TISSUE
  • Collagen Fiber- (white) most abundant type of
    protein fiber in the matrix. Thick wavelike
    strands which is flexible but resists stretching.
    (tendons) Also, the main unit for tissue repair.
    If you have a scar you notice how little it
    stretches but how tightly it binds the skin
    together

5
FIBROUS TISSUE
6
CONNECTIVE TISSUE
  • Elastic Fibers- not as strong as collagen and in
    much thinner fibers. Ability to stretch and
    return to original shape

7
CONNECTIVE TISSUE
  • Reticular Fibers- thin branching shape which
    resists physical stress

8
Types of Connective Tissue
  • Bone-osseous tissue
  • Small cell OSTEOCYTE located in a LACUNAE-
    hollow cavity- surrounded by many layers of
    calcium salts.
  • Compact bone- densely pact matrix of salts and
    collagen- nourishment must be provided to
    osteocytes by way of blood vessels that extend
    through bone in canals called HAVERSIAN CANALS

9
OSTEOUS TISSUE SLIDES
10
Types of Connective Tissue
  • Spongy bone not as densely packed- contain
    spaces that are filled with blood- called red
    marrow

11
BONE TISSUE
  • Matrix is deposited in thin, bony plates called
    SPICULES around the red marrow

12
Types of Connective Tissue
  • Cartilage- small cell- CHONDROCYTE located in a
    lacunae produces the matrix. It is less hard and
    more flexible than bone.

13
3 Types of CARTILAGE
  • 1. HYALINE CARTILAGE ( bluish-white)
    PROTECTIONS-forms supporting structures of
    larynx, attaches ribs, covers the ends of bones-
    dominated by the protein-sugar molecules of
    chondroitin sulfate

14
3 Types of CARTILAGE
  • 2. FIBROCARTILAGE- HIGHLY COMPRESSIBLE-
    cushion-like discs between vertebrae

15
3 Types of CARTILAGE
  • 3. ELASTIC CARTILAGE external ear, nose and
    epiglottis-some chondroitin sulfate

16
Types of Connective Tissue
  • Dense Connective Tissue- protein fibers are
    packed tightly together with little space in
    between for other substances. Collagen fibers are
    most abundant.
  • 1. Tendons attach muscle to bones stronger
    than ligaments
  • 2. Ligaments- attach bones to bones- more
    elastic than tendons

17
Dense Connective Tissue-
18
Types of Connective Tissue
  • Loose Connective Tissue- most widespread of all
    the tissues. Composed of all three types of
    fibers which are in a loose disorganized network
    surrounded by fluid.
  • AREOLAR TISSUE- universal packing tissue-
    appears cob web like- holds internal organs into
    position (mesentery)

19
Types of Connective Tissue
  • ADIPOSE- designed to store fat- intercellular
    material is minimal- filled with triglycerides

20
Types of Connective Tissue
  • BLOOD- considered connective tissue because of
    nonliving fluid matrix called blood plasma
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