Immune System
Immune Responses
Immune Cells
100
Disease-causing agents such as bacteria and viruses.
What are pathogens?
100

They trigger macrophages

Phagocytes

100

What bird has the strongest immune system?

Ostrich

200

Blood producing tissues found inside bones

Bone marrow

200

These are Memory cells and recognize invaders if they come back and can act quickly. 

T cells and B cells

200
White Blood Cells that recognize and destroy specific pathogens in body fluids and cells
What are lymphocytes
300
Part of the pathogen that the body recognizes as foreign.
What are antigens?
300

Skin, mucus, cilia are all parts of 

1st line of defence

300

A white cell that makes antibodies

B cells

400
large, Y-shaped molecules that with only 1 specific type of antigen
What are antibodies?
400

Pathogens entering digestive system are usually killed by this

Stomach acid

400

What is the yellow pus that collects around the infected wound?

Dead neutrophills

500

It cleans up damaged blood cells

Spleen

500

True/ False

Getting a fever means that your immune system is not working.

False

500

True/False

Inflammation is an immune response.

True

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