2.1 Microbiology Flashcards
Define bacteriology
The study of bacteria which are one celled microorganisms
Define microbiology
The study of small living organisms called microbes
Two types of bacteria
1) nonpathogenic (non-disease producing)
2) pathogenic (disease producing)
Nonpathogenic bacteria
Harmless and can be very beneficial
Saprophytes
Nonpathogenic bacteria that live on dead matter and do not produce disease
What percentage of bacteria are nonpathogenic
70%
Many live on the surface of the skin
Pathogenic bacteria
Cause infection and disease and some produce toxins
Can be easily spread in the salon by using unsanitary implements dirty hands and fingernails
Three basic shapes of bacteria
1) cocci- spherical shaped cells which appear singularly or in groups
2) bacilli-most common form of bacteria cells, bar or rod shaped
3) Spirilla-spiraled, coil, corkscrew shaped cells
Three groups of cocci
1) staphylococci
2) streptococci
3) diplococci
Staphylococci
Pus forming bacterial cells that form bunches or clusters and are present in abeses pustules and boils
Group
Streptococci
Pus forming bacterial cells that form long chains that can cause septicemia also known as blood poisoning and other serious infections
Diplococci
Bacterial cells that grow in pairs and cause certain infections including pneumonia
Bacilli
Most common form of bacterial cells
Bar or rod shaped
Produce a variety of diseases including tetanus the flu typhoid tuberculosis and diptheria
Spirilla
Spiral or coil shaped cells that cause highly contagious diseases such as syphilis cholera and lime disease
How do you bacteria cause infections
Invade the body through breaking the skin or natural openings
An infection occurs when an insufficient number of antibodies are produced by the body’s immune system to fight the harmful bacteria