General

Question 1

Virulence

Answer 1

properties that allow an organism to establish infection and to cause disease or death

Question 2

Mehanisms of Host Defense against Infection

Answer 2

Skin, tears, normal bacterial flora, gastric acid, bile, salivary/pancreatic secretions, filtration in nasopharynx, mucociliary blanket, neutrophils, monocytes, complement, Igs, cell-mediated immunity

Question 3

Opportunistic pathogens

Answer 3

organisms that mainly cause disease in hosts with impaired defenses

Question 4

Viruses

Answer 4

require living cells in order to replicate - obligate intracellular parasites