• Little movement

• Spindle-shaped, Smaller

  
  

  than active fibroblasts

  
  

• Fewer processes

  
  

• Small amount of rER

  
  

• Smaller, darker and elongated

  
  

  nucleus

• Abundant and irregularly branched cytoplasm
• Large ovoid pale-staining nucleus
• Rich in rER, well developed Golgi complex

• Features of both fibroblast and
  smooth muscle
• Numerous in wound healing
• Morphologic characteristics of fibroblast
• Contain increased amounts of actin & myosin
  -Behave like smooth muscle

• Structure : Narrow rim of cytoplasm,
  flattened and eccentric nucleus and appear
  as empty cells
• Lipid droplet
• Function : Store fats and produce heat
• Location : Throughout loose connective tissue
  
  

• Structure : Large, ovoid cells with spherical nucleus, cytoplasm filled with large basophilic secretory granules
• Location: Not easily identified
• Function : Store chemical mediators of inflammatory response
  -Substance release: Histamin
  

Identified by phagocytic activity demonstrated by ingested India ink

• Migrate from blood vessels
• Do not return to blood exc lymphocytes

• Spherical cells
• Dense staining nuclei
• Natural killer cells

• Migrated in response to specific stimuli

• Derived from b- lympocytes
• Function :Synthesis antibodies
• Location : Loose connective tissue associated with epithelial tissue
• Structure: Large ovoid cells with eccentric and deeply stained nucleus (clock-face appearance)

• Flexible and have high tensile strength
• Stain with eosin
• Appear as wavy structures of variable width and intermediate length
• Appear as bundles of fine, thread-like subunits-collagen fibrils

• Very strong & great resistance
  to tensile strength
• Skin, tendons, ligaments and bone

• Provide resistance to pressure
• Hyaline and elastic cartilage

• Thin and branching reticular fibers
• Forms meshwork in liver, lymph node,
  spleen and hematopoietic organs

• Mainly type III collagen
• Arranged in a mesh-like pattern or network
• Abundant in liver, lymph node, spleen and hematopoietic organs
• Support capillaries, nerves and muscle cells
• Only visible when stained with SILVER STAIN

• Thinner than collagen fibers
• Arranged in branching pattern to form 3D network
• Interwoven with collagen fibers to limit distensibility of tissue and prevent tearing from excessive stretching
• Stain with eosin but not well
• Ligamentum flava of vertebral column, vocal folds, elastic arteries

• Viscous, clear substance that has a slippery feel
• High water content
• Fills the space between cells and fibers, lubricant and barrier to penetration of invaders
• Forms glycosaminoglycans, proteoglycans and multi adhesive glycoproteins
  
  

• Areolar
• Thin fibers and relatively sparse
• Ground substance abundant
• Beneath epithelia that covers body surfaces and line internal surfaces of the body

• Abundance of fibers that are arranged in bundles oriented in various direction and few cells
• Little ground substance
• Present in submucosa of hollow organs and reticular layer of the dermis
  

• Collagen bundles are arranged according
  to a definite pattern
• eg : tendons, ligaments , aponeuroses

• Unilocular
• Hypodermis
• Predominet in adult
• The distribution and density are determined by age and sex
• Insulating function in skin
• Richly vascularzed
• Polyhedral or spherical
• Thin ring of cytoplasm surrounding the vacuole left by the dissolved lipid droplet
• Eccentric and flattened nuclei

• Moltilocular cells
• Location: Human embryo, newborn and certain areas
• Produce heat and protect newborn against cold
• Polygoal and smaller than white
• Cytoplasm -numerous lipid droplets and mitochondria
• Nucleus - eccentric but not flattened