MEDRADSC 1B03 Lecture Notes - Lecture 4: Epithelium, Granulation Tissue, Vascular Permeability

• School: McMaster University
• Department: Medical Radiation Sciences
• Course: MEDRADSC 1B03
• Professor: Sandra Charbonneau

Document Summary

There are 3 types of healing: resolution. Tissue returns to normal in short period of time ie: mild sunburn: regeneration. Replacement (as a result of mitosis or meiosis) of injured tissue with cells of the same parenchymal type (same type of tissue) leaving little or no evidence of injury. Only involves cells that can go through mitosis ie: epithelial cells (divide rapidly) & liver cells (they don"t divide but will divide if they have to: replacement. Extensive damage of tissue/cells which do not regenerate (no chance of regeneration occurring) Replaced by ct (scar/fibrous tissue is very non-elastic) Want to prevent this type of healing. More common in chronic conditions ie: brain or myocardium (do not have the ability to undergo mitosis) Depends on the tissues that are affected & type of injury that has been afflicted. Regeneration & replacement of 3 types of body cells (dictate the types of healing processes) Cells which continue to divide & replicate throughout life.