Save
Upgrade to remove ads
Busy. Please wait.
Log in with Clever
or
show password
Forgot Password?
Don't have an account?  Sign up 
Sign up using Clever
or
Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account. Your email address is only used to allow you to reset your password. See our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't Know
Remaining cards (0)
Know
0:00
edit
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Physical Control

Test #3

QuestionAnswer
Define asepsis Without infection, free of infectious agents. Surgical asepsis is stricter than medical asepsis.
Define sterilization Destruction or removal of all life; including viruses and spores.
Define sterile Free of all life/microorganisms.
Define disinfection Destruction or removal of all pathogens from non-living surfaces or objects.
Define disinfectant agent used on non-living surfaces to control the growth of microbes.
Define antisepsis destruction or removal of pathogens from living tissue to prevent infection.
Define antiseptic An agent uused on living tissue to control the growth of microbes.
Define sanitization Destruction or removal of 99.9% of vegetative pathogens--or--removal of pathogens from eating/drinking utensils to a safe public health level.
Define degerming Physical/mechanical removal of microbes on a limited area (alcohol before an injection)
Explain -cidal vs -static action -cidal/-cide = refers to killing (tuberculocidal=>mycobacterium tuberculosis). -stasis/-static = refers to inhibition without killing.
What does the logrithmic death rate refer to? Upon exposure to a cidal agent, organisms do not die at the same time, they die at a logrithmic rate. The same percentage dies during each equal time period.
What are the moist heat methods of physical control? Pasteurization, boiling and steam under pressure.
How does a steam autoclave work? Items are placed in the high temperature/pressure chamber, air is vented out, pressure builds, when full pressure is achieved-begin timing. Common run=20 min at 15psi. Exhaust steam when time is up.
What are the dry heat physical control methods? Incineration - burning the item as in innoculating loops. Hot air oven - sharp instruments and glass.
What are the cold physical control methods? Refrigeration - optimum is just above freezing. Freezing - optimum -20C(0F) - food, drugs, culture preservation.
What are the drying physical control methods? Drying in the open or in an oven(low heat for long time) - drying fruits or meats. Lyophilization - freeze vacuum drying (freeze first then dehydrate with powerful vacuum) - food, drugs, culture preservation.
How does the osmotic pressure method work? Dehydrate the organism by adding lots of salt or sugar - used to preserve food.
Which is better for controlling the growth of microbes - u/v or gamma/x-rays? Gamma/x-rays.
How does filtration method work? Physical removal of organisms from liquids. Can use filters of specific pore size; most filters pass viruses, a few remove them.
Which physical control methods are static? Cold, drying and osmotic pressure.
Created by: lisaanne11
 

 



Voices

Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
Retries:
restart all cards