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Connective Tissue
Chapter 4.2
Human Anatomy & Physiology
Connective Tissue
■ Function:
- Binds structures together
- Provides support & protection
- Fills spaces
- Produces blood cells
- Stores fat
■ For energy, insulation, organ protection
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
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
1. Fibrous Connective Tissue
■ Loose (areolar) connective tissue
◻ adipose
■ Dense connective tissue
◻ Regular
◻ irregular
■ Reticular connective tissue
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)
■ Adipose tissue is a
type of loose
connective tissue
- stores fats,
provides insulation
- found beneath
skin, around kidney
& heart, breast
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
Dense Regular Dense Irregular
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
■3 types
- Hyaline cartilage-trachea
- Elastic cartilage – ear
- Fibrocartilage - ACL
3. Bones
■ Most rigid of the connective tissues
■ Minerals and protein fibers gives bone
rigidity, elasticity and strength
■ Two types:
◻ Compact bone
◻ Spongy bone
A. Compact Bone
■ Found in the outer portion of long bones
■ Consists of many cylindrical-shaped units
called osteon
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
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
Connective_tissue.pptx

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Connective_tissue.pptx

  • 1. Connective Tissue Chapter 4.2 Human Anatomy & Physiology
  • 2. Connective Tissue ■ Function: - Binds structures together - Provides support & protection - Fills spaces - Produces blood cells - Stores fat ■ For energy, insulation, organ protection
  • 3. 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
  • 4. 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
  • 5.
  • 6. 1. Fibrous Connective Tissue ■ Loose (areolar) connective tissue ◻ adipose ■ Dense connective tissue ◻ Regular ◻ irregular ■ Reticular connective tissue
  • 7. 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)
  • 8.
  • 9. ■ Adipose tissue is a type of loose connective tissue - stores fats, provides insulation - found beneath skin, around kidney & heart, breast
  • 10.
  • 11. 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
  • 12. Dense Regular Dense Irregular
  • 13. 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
  • 14. ■3 types - Hyaline cartilage-trachea - Elastic cartilage – ear - Fibrocartilage - ACL
  • 15. 3. Bones ■ Most rigid of the connective tissues ■ Minerals and protein fibers gives bone rigidity, elasticity and strength ■ Two types: ◻ Compact bone ◻ Spongy bone
  • 16. A. Compact Bone ■ Found in the outer portion of long bones ■ Consists of many cylindrical-shaped units called osteon
  • 17.
  • 18. 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
  • 19.
  • 20. 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