Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

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.
We do not share your email address with others. It is only used to allow you to reset your password. For details read 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.
Didn't know it?
click below
Knew it?
click below
Don't know
Remaining cards (0)
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


Antigens, Pathogens, Lines of Defence

Define Immunity A reaction that occurs in animals and humans in response to an infection
Define the Immune System It assists the body to resist infection and disease through specialized cells
What is it meant by "self" and "Non self" ‘self’ – material made by the body it inhabits ‘non-self’- materials, including cells that are not made by the body it inhabits.
Antigens Are compounds usually made of protein and carbohydrates, they can be ‘self’ or ‘non-self’. Can trigger the immune system to respond. Usually located on the surface.
AntiBodies Are proteins produced by lymphocytes in response to non-self Antigens. They react specifically with the Antigens that trigger their production.
Pathogens Are organisms that are able to cause a disease in a host. Antigens on the surface of the Pathogen will trigger the immune system to respond.The Antibody will react with the Antigen by combining with it and disabling it
Nonspecific Immunity Same reaction to all infections, No ‘memory’ of prior infections. Same response level for each infection of the same organism.
Specific Immunity Specific reactions to each infection, ‘Memory’ of prior infections, Much greater response level on a second infection on the same organism.
What is the general purpose of the first line of defence? To stop the infection or micro- organism by attempting to stop them from entering the body.
First Line of Defence Skin, Mucous membranes, Natural secretions, Natural flora.
Created by: OWilly29



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:
restart all cards