Connective Tissue Deep tissues that are never exposed to the

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Connective Tissue

• Deep tissues that are never exposed to the
  environment outside of the body. Familiar types
  are bone, blood and fat.
• Connective tissue is the most abundant type of
  tissue and is found almost everywhere.

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Connective tissue Functions

• 1. Establish a structural framework
• 2. Transport fluids and dissolves materials from
  one region of the body to another. (blood)
• 3. Provide protection for delicate organs

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More functions

• 4. Supporting , surrounding and interconnecting
  other tissue types.
• 5. Store energy reserves especially in the form
  of lipids.
• 6. Defending the body from invasion of pathogens.

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3 Basic Components

• 1. Specialized cells
• 2. Extracellular proteins
• 3. A fluid known as ground substances.

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Connective Tissue
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Loose Connective Tissue Proper1. Areolar

• Structure - loose open arrangement of supporting
  fibers
• Function - wrap and cushion organs, separate
  muscles, wrap blood vessels and nerves.
• Location - wide spread throughout the body.

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Areolar
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2. Adipose

• Structure - loose connective
• tissue dominated by
• adipocytes.
• Function- provide padding, insulate and storage
  energy
• Location - beneath skin, buttocks, breasts, and
  by kidneys

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3. Reticular

• Structure - branching
• interwoven network of
• tough flexible fibers
• Function - supporting
• framework for certain
• organs of the body
• Location - liver , spleen,
• lymph nodes and bone
• marrow

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Dense Connective Tissue Dense 1.Dense Regular
Tendon Slide

• Structure - Collagen fibers
• predominate type, regularly
• arranged bundles of closely
• packed fibers that run in the
• same direction.

• Function - attach muscle to bone and bone to bone
• Location- ligaments and tendons

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2. Dense Irregular

• Structure - Dense irregular is like regular
  except the fibers
• go in many directions.
• Function - Provide structural strength, prevent
  over
• expansion
• Location - digestive tract, bladder, and dermis
  of the skin.

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Dense Irregular

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Fluid Connective Tissue 1. Blood

• RBC - more than half
• the volume of blood ,
• transport O2 and CO2
• Plasma - watery ground
• substance.
• WBC - in plasma, protects
• against disease and infection
• Platelets - function in clotting

• Structure - cells in nonliving matrix
• Function - transport O2 and CO2
• Location - within vessels

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2. Lymph.

• Interstitial fluid or tissue fluid that enters
  small
• passageways between tissues to reenter the
  circulatory system.

• Structure - interstitial fluid
• Function - respond to injury
• Location - between tissues that reenter the
• circulatory system.

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Supporting Connective Tissue
A. Cartilage 1. Hyaline 2. Elastic
Cartilage 3. Fibrocartilage B. Bone or
Osseous Tissue
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matrix - firm gel no blood flow - avascular no
nerves
1.Hyaline Cartilage

• Structure - closely packed collagen fibers ,
  unstructured,
• tough and somewhat flexible
• Function - supports, reinforce and cushions
• Location - covers ends of long bones, nose,
  holds ribs to
• sternum, supports passageways of the respiratory
  tract.(trachea)

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2.Elastic Cartilage

• Structure - similar to hyaline except fibers are
  made of elastin
• which are more resilient and flexible
• Function - maintain shape of structure but allows
  flexibility
• Location - ears, epiglottis, vocal cords

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3. Fibrocartilage
White Fibrocartilage

• Structure - abundance of collagen fibers which
  are durable
• and tough
• Function - Absorption of shock, prevents bone to
  bone contact
• Location - between pads of vertebrae, between
  bones of pelvis
• and knee joint.

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Bone

• Structure - very well vascularized, with a
  rocklike hardness
• Function - supports, protects,provides a lever
  system for muscles
• to act on, storage of calcium and other minerals
  inside site for
• blood cell formation.
• Location - throughout the body