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

Immune System


Ability of the body to resist a particular disease. Immunity.
White blood cells that engulf foreign invaders. Phagocytes.
Foreign substances that are not supposed to be in your body. Antigens.
Disease-causing bacteria or microorganism Pathogen.
Proteins that react with a specific antigen and inactivate them. Antibodies.
True or False: The antigen-antibody complex involves using antibodies with a specific shape to match the antigen. True.
___________ _____________ ______________ have antigens present on their membrane. Red blood cells.
Reaction of the immune system to the presence of foreign cells or molecules by producing antibodies that are very specific and specialized cells that bind to and inactivate foreign substances. Immune response.
Produces T-cell lymphocytes. Thymus.
Makes red blood cells, white blood cells, and platelets. Bone Marrow.
Removes warn out red blood cells and removes, stores, and produces white blood cells. Spleen.
Immunity that develops during an individual's lifetime. Acquired immunity.
Body produces the antibodies to a particular disease either by contact with the disease organisms or by receiving a vaccine. Active immunity.
Dead or weakened form of a pathogen injected into an individual so that the body can produce antibodies to fight the foreign antigen. Vaccine.
Antibodies from an outside source that are introduced into the individual's blood. Passive immunity.
True or False: Passive immunity involves permanent immunity. False, the immunity is temporary.
Antibodies from the mother enter the baby's blood before birth and provide immunity. Maternal immunity.
True or False: Maternal immunity is an example of passive immunity. True.
A disorder caused by the release of histamine by the body's cells following an antigen-antibody reaction. Allergy.
True or False: Allergies are an abnormal reaction of the immune system that occurs in response to otherwise harmless substances. True.
Six examples of first-line defenses. Skin, sweat, tears, membranes, mucus, and stomach acid.
Two examples of second-line defenses. Inflammatory response (swelling and redness) and macrophages that engulf bacteria.
Recognizes the antigen on the cell's surface, the cell divides and creates killer _________ __________ and memory cells. T-cells.
Gets stimulated by helper t-cells that recognize the antigens, undergoes cell division, producing plasma cells and memory cells, plasma cells make antibodies that are released into the blood and bind to the antigen, phagocytes come and destroy complex. B-cells.
Created by: emarciante9



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