TCDHA Microbiology &infection Midterm Exam Questions and Correct Answers New Update (Verified A+ Pass)

TCDHA Microbiology &infection Midterm Exam Questions and Correct Answers New Update (Verified A+ Pass) Major source of disease agents - mouth How do we control the spread of pathogens in the office? - standard precautions Asepsis - The absence of infection or infectious materials or agents Cross-Contamination - A process that allows transfer of microorganisms between persons and environmental surfaces Universal Precautions - consider all clients as being infected with blood borne pathogens and therefore applying infection control procedures to the care of all clients direct contact - Contact with microorganisms at the source as in the clients mouth indirect contact - Contact with items contaminated with a clients microorganisms droplet infection - Contact with sprays, splashes, aerosols or splatter containing microorganisms airborne infection - smaller particles, can remain airborne for hours Sterilization - destroy/kill all mo's in a material or on an object Disinfection - process that destroys mo's, not spores & viruses Bactericidal - agent that kills bacteria Bacteriostatic - stops growth of bacteria. Pasteurization - heat process employed to reduce # of bacteria and destroy pathogens Lyophilization - a process of preserving microbes from a substance by removing the water, rapidly freezing, then drying it by using a vacuum pump SPORES - Bacteria that develop a defense mechanism against death three common types of sterilization - heat, gas, liquid Thermophiles - heat loving bacteria Psychrophiles - cold loving bacteria Obligate Aerobes - grow in presence of oxygen Obligate Anaerobes - grow in absence of oxygen Facultative Anaerobes - grow in the presence or absence of oxygen Microaerophiles - can only tolerate a certain % of oxygen ACIDOGENIC - bacteria that produce acid during growth Halophilic Bacteria - sodium chloride loving bacteria Haloduric Bacteria - sodium chloride hating bacteria Halophiles - Salt loving bacteria Osomotolerant - mo's which can grow at relatively high salt concentration Saccharophiles - requires high sugar as an osmotic regulator instead of salt Antimicrobial - term used to designate all the categories of drugs used to treat infections. Resident skin flora - cannot be removed totally with surgical scrub Transient flora - serves as source of disease Endogenous Bacteria - Normally resides on or in body without causing harm but Has disease-producing potential Heat-resistant gloves are designed for which task? - Unloading sterilizers Which benefit is associated with properly fitted exam gloves? - Prevents hand fatigue Which protective barrier is donned last, before treating a client? - gloves Which step is first in the chain of chairside asepsis? - place patients bib ________ water should be used to rinse lathered soap from the hands? - luke warm Which hand hygiene equipment facilitates cross-contamination? - Squeeze bottle soap dispenser Which waste product is classified as regulated medical waste? - Contaminated sharps infectious waste is also called - regulated medical waste