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Flashcards in Immunology Deck (18):
1

Define Pathogen

A microorganism which parasitized an animal and produces a disease.

  • bacteria 
  • yeast
  • virus

2

What are the two divisions of lymphocytes?

 

T cells and B cells

3

What is the role of a B cell

Produces circulating antibodies 

4

What are the subdivisions of T cells?

Cytotoxic T cell and helper T cells

5

What are T cells responsible for?

Cell mediated immunity

6

What types of inflammation are there?

Chronic and acute

7

What is acute inflammation and what happens during it

  • response to samage
  • immediate
  • white blood cells enter tissue
  • blood vessels dilate
  • macrophages remove and consume dead cells

8

What is fever?

A rise in temperature above normal

9

What do cytotoxic T cells do?

  • recognise peptide antigens
  • destroy cancerous cells and virus infected cells

10

What do natural killer cells do and what are they?

 

  • T cells
  • Kill virus infected cells
  • kill cancerous cells

11

Where do viruses replicate?

only in living cells

12

What are viruses composed of?

  • core of nucleic acis
  • protein shell
  • some have outer lipid capsule

13

What is an antigen?

Any substance that can be specifically bound by an antibody.

14

What is a complement?

  • functionally linked proteins

15

What do protein complements do?

 

Aid defences when antibodies bind with antigens

 

Lysis and oponization of foreign organisms

 

Inflammation and clearing immune complexes. 

16

What is a helper T cell?

Type of T lymphocyte 

17

What does a helper T cell do?

Recognises foreign antigens on the surface of antigen presenting cells

Stimulate the production of cytotoxic T cells

 

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