Introduction To Clinical Sciences Flashcards
Inflammation
Acute/chronic tissue injury response
Acute inflammation
Infections, hypersensitivity - neutrophils mainly responsible
Chronic inflammation
Autoimmunity, recurrent infections - macrophages and lymphocytes mainly responsible
5 cardinal signs of inflammation
Rubor (redness), Dolor (pain), Calor (heat), Tumor (swelling) and loss of function
Stages of inflammation
1) Increased vessel calibre
2) Fluid exudate
3) Cellular exudate
Increased vessel calibre
Fluid exudate
Cellular exudate
Stages of neutrophil action in acute inflammation
1) Margination
2) Adhesion
3) Emigration
4) Chemotaxis
Margination
Adhesion
Emigration
Chemotaxis
Site of inflammation
1) Phagocytosis
2) Phagolysosome + Bacterial killing
3) Macrophages clear debris
Outcomes of acute inflammation
1) Resolution (normal)
2) Supporation (pus formation)
3) Organisation (granulation tissue + fibrosis) (cardiac tissue and neurons never resolve and most become this)
4) Progressive (excessive recurrent inflammation - becomes chronic and forms fibrous tissue)