Tissue

• Tissue- a group of cells with a similar structure that perform a common function
• Epithelial and connective tisssues are non exitable
• Muscle and nervous tissue are exitable
• Organ- a structure made of tissues organised to perform a particular function
• System: organs working together as functional units
• Stratified epithelium

  • Stratified squamous- skin
  • Transitional- urinary tract and bladder
• Damage and disease of Epithelial tissue steps 1-5

  1. Atherosclerosis
  2. Artery wall damaged
  3. Cholesterol accumulates
  4. Inflammatory response
  5. Large white cells enter wall
• Damage and sisease of Epithelial tissue steps 6-10

  • Atheroma forms
  • Calcium salts and fibrous tissue accumulate
  • Wall elasticity reduced
  • Artery narrows
  • Hard plaque forms