Immune System And Defenses Flashcards
(5 cards)
1
Q
What is the human body’s defence system?
A
Immune system and physical & chemical barriers
2
Q
What is the most important part of the immune system?
A
White blood cells
3
Q
What are the 3 functions of white blood cells?
A
- Phagocytosis
- Anti toxins
- Antibodies
4
Q
What are antigens?
A
Substances that are in are immune system that are foreign such as a cell wall or virus protein.
5
Q
What are antibodies and what do they do?
A
Small proteins made by white blood cells. They lock on to antigens to act as a signal to tell white blood cells to destroy them.
