disease and infections Flashcards
bacteria structure
structural difference between gram negative and gram positive bacteria
gram negative bacteria are surrounded by a thin peptidoglycan cell wall
gram positive bacteria have no outer membrane but have are surrounded by many layers of peptidoglycan thicker than gram negative
Viral Protein Shell structure
The viral nucleic acids required for replication are enclosed in a protein shell with or without a lipid membrane coat
Viruses are true parasites, requiring host cells for replication
The cells they infect and the host response to the infection dictate the nature of the clinical manifestation
what is pathology
study of disease process
how are diseases classified
how do diseases develop
what does neoplasia mean
it means new growth and indicates the presence of cells showing uncontrolled or disordered growth
what is hypertension
high blood pressure
what causes shock
pooling of blood
what is thrombosis
blood clot
what is ischaemia
lack of blood supply
what is a haemorrhage
loss of blood
Aetiology is the…
cause
an e.g of one disease with several aetiologies is…
anaemia
an e.g of one aetiology with several diseases is…
smoking
four main types of pathogens
- viruses
- bacteria
- fungi
- parasites
