The Immune System Flashcards

1️⃣ Familiarise yourself with the flashcards:

  • Look through all the flashcards to see what’s on both sides.
  • Make sure you understand the information on each card. If something’s unclear, click the link to the revision notes at the bottom of the page for more details.

2️⃣ Test yourself:

  • Look at the question or prompt on each card and try to remember the answer before flipping it over.
  • Check the answer and make a note of any cards you find challenging and need to go over more.

3️⃣ Consistently Review and Practice:

  • Use spaced repetition: spend more time on the cards you struggle with and go over them more often.
  • Regularly review all the flashcards to help you better understand and retain the information over time.

Note: We may include questions that have multiple correct answers. It’s useful to remember specific examples to understand these concepts better.

What is the role of the non-specific defence system?

The non-specific defence system prevents pathogens from entering the body. If breached, the immune system acts as the second line of defence to stop the infection.

What are phagocytes and their function?

Phagocytes are white blood cells that engulf and digest pathogens through phagocytosis. They are non-specific and do not differentiate between various types of pathogens.

What are lymphocytes and their function?

Lymphocytes are white blood cells that produce antibodies.

These antibodies bind to antigens on pathogens, causing them to clump together, facilitating phagocytosis.

How do antibodies help the immune system?

Antibodies bind to antigens on pathogens, causing them to clump together. This prevents pathogens from entering cells and makes them easier to be engulfed by phagocytes.

What is the difference between phagocytes and lymphocytes?

Phagocytes are non-specific white blood cells that engulf pathogens.

Lymphocytes are specific white blood cells that produce antibodies to target specific pathogens.

How do lymphocytes protect against toxins?

Some lymphocytes produce antitoxins, which neutralise toxins produced by pathogens, preventing them from damaging cells.

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