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Flashcards in Human Defense System Deck (18)
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1

Antibodies

Proteins produced by white blood cells in respond to antigens

2

Antigens

Foreign molecule that causes production of an antibody

3

Thymus gland

White blood cells mature here

4

Types of T Cells

Killer
Helper
Suppressor
Memory

5

Killer t cells

Produce perforin to attack abnormal body cells

6

Helper T cells

Recognise antigen on white blood cells

7

Suppressor

Inhibit immune response

8

Memory T cells

Stimulate memory B cells + killer T cells

9

Interferon

Protein which specifically attacks viruses

10

Perforin

Attacks abnormal body cells

11

Immunity

Ability to resist disease

12

Pathogen

Anything that causes disease usually bacteria, virus or fungi

13

B cells

Mature in bone marrow
Make antibodies
Retain memory of infection

14

Plasma B cells

Produce antibodies
Each B cell recognises one specific antigen and produce one specific antibody

15

Induced immunity

Ability to resist disease caused by specific pathogens by the production of antibodies

16

Active immunity

Persons own antibodies are produced in response to antigen

17

Passive immunity

Antibodies are obtained from another source

18

Vaccine

A dead microbe that is injected into the body and triggers antibodies but does not cause the disease