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Mesenchyme (Connective Tissues (Proper (Areolar (Gel-like matrix with all…

- - - - Gel-like matrix with all three fiber cells
      - Wraps and cushions organs.
      - Widely distributed under epithelia of body.
    - - Matrix as in areolar, very sparse; closely packed adipocytes or fat cells.
      - Provides reserve fuel; insulates against heat loss; supports and protects organs.
      - Under skin; around kidneys and eyeballs; within abdomen; in breasts.
    - - Network of reticular fibers in a typical loose ground substance.
      - Fibers form a soft internal skeleton that supports other cell types.
      - Lymphoid organs.
    - - Primarily parallel collagen fibers; a few elastic fibers; major cell type is the fibroblast.
      - Attaches muscles to bones or to other muscles; attaches bones to bones; withstands great tensile stress.
      - Tendons, most ligaments aponeuroses.
    - - Dense irregular connective tissue containing a high proportion of elastic fibers.
  - - - Amorphous but firm matrix.
      - Supports and reinforces.
      - Froms most of embryonic skeleton, covers the ends of long bones in joint cavities; forms costal cartilages of the ribs; cartilages of the nose, trachea and larynx.
    - - Similar to hyaline cartilage, but more elastic, fibers in matrix.
      - Maintains the shape of a structure while allowing great flexibility.
      - Supports the external ear; epiglotis.
    - - Matrix similar to but less firm than matrix in hyaline cartilage.
      - Tensile strength with the ability to absorb compressive shock.
      - Intervertebral discs; pubic symphysis; discs of knee joint.
  - - - Bones.