Connective Tissue

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Connective Tissue

• The most abundant and widespread tissue
  of your body.
• deep tissue - never exposed to outside
• most diverse

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Mesenchyme

• embryonic tissue
• Gives rise to CT cells
• Unspecialized
• Found in outer walls of capillaries

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Starting Point.

• Tissue cells are separated by non-living,
  intercellular materials that the cells secrete.
  (Ground Substance)
• These secretions vary from liquid, semi-solid, or
  solid.
• Cells are usually some distance apartand have
  considerable intercellular material between them.

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3 components of connective tissue

• Specialized cells
• Protein fibers
• Ground substance
• Matrix 2 3

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General Characteristics

• Connects
• Supports
• Protects other Tissues
• Provides Framework
• Fills Spaces
• Stores Fat
• Produces Blood Cells
• Helps Fight infection
• Helps Repair Tissue
• Transports materials

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Major Cell Types
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Fibers of Connective Tissue

• Collagenous Fibers (White Fibers)- Thick,
  threadlike fibers of collagen with great tensile
  strength. Their job is to hold structures
  together.

Collagen- a major structural protein of the body.
It is the main ingredient of leather when this
protein is denatured by boiling it becomes gelatin
Elastic Fibers (Yellow Fibers)- Bundles of
microfibrils composed of elastin that are
elastic. Their job is to provide certain
tissues the ability to stretch.
Reticular Fibers- Thin fibers of collagen. Their
job is to form supportive networks within
tissues. Tissues and organs supported by
reticular fibers.
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Types of Connective Tissues
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Major types of connective tissue
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Loose Connective Tissue
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Adipose Tissue (loose CT)
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Elastic Connective Tissue
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Fibrous Connective Tissue (dense)
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Tendons

• Tendons are strong strips which attach the
  muscles to bones. When a muscle contracts to move
  a joint, it is the tendon which pulls on the bone.

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Ligaments

• Ligaments are strong bands which connect bones at
  the joint. They're elasticated to allow the
  movement of that joint, but are strong enough to
  stop movement outside the normal range.

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Reticular Connective Tissue
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Cartilage

• Cartilage is a soft cushioning substance which
  covers the ends of the bones. It acts as a shock
  absorber and reduces the rubbing of the bone
  surfaces.

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Hyaline Cartilage
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Elastic Cartilage
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FibroCartilage
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Bone
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Other Connective Tissues

• Blood- cells that are suspended in the fluid
  (intercellular matrix called blood plasma)

Reticuloendothelial Tissue- Phagocytic cells that
are widely scattered throughout the body. They
are found in the blood, lungs, brain, bones
marrow,spleen, liver, and lymph glands.