Lecture1: Basic Concepts Of Infection Flashcards
What are Bacteria classified as?
Prokaryotes
What are Resident Bacteria?
Bacteria that have an establish niche at one of the many body sites, they stay there indefinitely
What are Transient Bacteria?
They are acquired from the environment and establish themselves briefly, and excluded from competition by any defense mechanisms
When is the term Carrier State used?
When organisms known to be potentially pathogenic are involved
What causes the occasional displacement of organisms across epithelial barriers?
Trauma or childbirth
What is a cause of infection when structures like heart valves and foreign bodies are in the blood stream?
Transient bacteria
What are damaged valves or foreign bodies in the blood stream called?
Prosthesis
The skin provides a dry slightly acidic aerobic environment that is host to?
abundant flora
Where is the skin flora most abundant?
Most skin areas
Organisms of the skin flora are resistant to?
Bactericidal effects of skin lipids and fatty acids
What bacteria does the mouth and pharynx contain?
Facultative and anaerobic bacteria
The small intestine bar the lower ileum contains?
Scanty resident flora
Those on a carnivore diet have what more than vegetarians?
Bacteriodes
The respiratory tract is the primary site of pathogen…?
Staphylococcus aureus
What protects the lower respiratory tract?
The epithelial cilia and mucociliary blanket
