disease
failure of the body to function normally
pathogen
disease producing microorganisms
infection
invasion of the body by a pathogen and the symptoms that develop in response to the invasion
*signs and symptoms*
localized infection
restricted to a small area of the body
systemic infection
widespread infection throughout the body, usually spread by the blood
bacteria
single cell organisms found everywhere
parasites
require a LIVING host
virus
smallest infectious agent
fungus
plantlike organism- grows best in dark, damp places
mycotic infections
pathogenic fungal infections usually localized
protozoa
single cell, animals like microbes
mosquitoes
are NOT a parasite, they are a predator
gram stain
bacteria classified according to staining characteristics
gram negative
bacteria will not absorb the dye it will pick up a red or Pink stain
culture and sensitivity
if the antibiotic kills the bacteria, the bacteria is sensitive. if the antibiotic does NOT kill the bacteria, the bacteria is resistant
portal of entry
how pathogens enter the body
Parenteral route
includes injuries that penetrate the skin or mucus membrane such as bites, cuts, or surgery
two most common portals of enter or exit are _______ and _______
respiratory and GI (gastrointestinal)
exhale
portals of exit
the way that pathogens leave an infected body
GU
Gastrial urine
GI
Gastrointestinal