Connective tisses

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Connective Tissue

• Chapter 4.2
• Human Anatomy Physiology

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Connective Tissue

• Function
• - Binds structures together
• - Provides support protection
• - Fills spaces
• - Produces blood cells
• - Stores fat
• For energy, insulation, organ protection

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Parts of tissues

• Structure
• - Tissue cells are widely separated by
  extracellular matrix
• - Can be solid, semisolid, or liquid
• Matrix of connective tissue determine its
  properties

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Fibers of the Matrix

• White fibers contain collagen which gives the
  fibers flexibility and strength
• Yellow fibers contain elastin more elastic than
  collagen but not as strong
• Reticular fibers thin, highly branched
  collagenous fibers that provide support

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1. Fibrous Connective Tissue

• Loose (areolar) connective tissue
• adipose
• Dense connective tissue
• Regular
• irregular
• Reticular connective tissue

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A. Loose (areolar) Connective Tissue

• Lies between other tissues or between organs
  binding them
• Cells made of fibroblasts large, star-shaped
  cells
• Contains many white fibers (strong and flexible)
  and yellow fibers (very elastic)

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• Adipose tissue is a type of loose connective
  tissue
• - stores fats, provides insulation
• - found beneath skin, around kidney heart,
  breast

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B. Dense Connective Tissue

• Regular
• Consists of parallel bundles of collagenous
  fibers
• Found in tendons ligaments
• Binds organs together

• Irregular
• Bundles run in different direction
• Found in inner portion of skin

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Dense Irregular
Dense Regular
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2. Cartilage

• The cell (chondrocytes) lies in small chambers
  called lacunae
• Matrix is solid yet flexible
• Lacks direct blood supply, as a result, it heals
  slowly

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• 3 types
• - Hyaline cartilage-trachea
• - Elastic cartilage ear
• - Fibrocartilage - ACL

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3. Bones

• Most rigid of the connective tissues
• Minerals and protein fibers gives bone rigidity,
  elasticity and strength
• Two types
• Compact bone
• Spongy bone

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A. Compact Bone

• Found in the outer portion of long bones
• Consists of many cylindrical-shaped units called
  osteon

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B. Spongy Bone

• Found on ends of long bone
• Contains bony bars and plates called trabeculae
  separated by irregular spaces
• Blood cells are made within the red marrow found
  in the spongy bone

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4. Blood

• Connective tissue composed of cells suspended in
  liquid matrix called plasma
• Red blood cells (erythrocytes) carries oxygen
• White blood cells (leukocytes) fights infection
• Platelets fragment of giant cells found in bone
  marrow

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