BAMS: Pathology and immunity (intro to pathology and immunology) Flashcards
what is immunology?
the study of the immune system
what is pathology?
the study of the causes/effects of diseases
why is immunology and pathology important?
to make the correct diagnosis
to provide the correct treatment
to make appropriate referrals
to advise and educate patients
what is aetiology?
the genetic or environmental causes of a disease
what does pathogenesis mean?
progressive changes as disease develops - involves morphological cellular changes (either macroscopic or microscopic)
what does sequalae mean?
what happens next? often involves intervention
examples of common oral pathologies?
oral cancer
periodontitis
what is the aetiology (cause of disease) of oral cancer?
excessive alcohol/tobacco consumption (increased susceptibility) (environmental cause)
what is the pathogenesis (changes as disease develops) of oral cancer?
hyperplasia, dysplasia, neoplasia
hyperplasia = a condition where an organ or tissue increases in size due to an increase in cell production
dysplasia = a condition where cells grow abnormally in an organ or tissue
neoplasia = abnormal and uncontrolled growth of cells or tissues in the body
what is the sequalae (what happens next) for oral cancer?
radiotherapy, surgery, patient advice
(how medical professionals can intervene)
what is the aetiology (cause of disease) for periodontitis?
bacterial origin (plaque)
what is the pathogenesis (changes as disease develops) of periodontitis?
inflammation in gingival tissue, bone resorption
what is the sequalae (what happens next) for periodontitis?
physical debridement of plaque (removing cause), removal of infected tissue, patient advice
what are the systemic diseases that periodontitis is linked with?
diabetes
rheumatoid arthritis
respiratory disease
stroke
alzheimer’s disease
what is the aetiology of rheumatoid arthritis?
environmental and/or genetic factors, other diseases
what is the pathogenesis for rheumatoid arthritis?
joint inflammation, increased osteoclast activity, circulating ACPA (antibodies)
what is the sequalae for rheumatoid arthritis?
NSAIDs (Nonsteroidal anti-inflammatory drugs), steroids, treatment of other diseases
what is the immune system made up of?
leukocytes
lymphocytes
endothelial cells
epithelial cells
what connects the organs and cells of the immune system?
lymphatic system
what does the lymphatic system consist of?
lymph
lymphatic vessels
lymphoid organs
lymphoid tissues
immune cells
–> comprised of primary and secondary sites
what is the primary sites of the lymphatic system?
where immune cells are created
what is the secondary sites of the lymphatic system?
where immune cells are stored
what is lymph?
a clear, colourless fluid that circulates through the lymphatic system
what is lymph made up of?
90% water, also proteins, and immune cells