Blood groups

Unit 2: The Circulatory System

§2.7 Blood groups

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Unit 2: The Circulatory System

§2.7 Blood groups

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Today's program

Homework check
Explanation immune system
Assignment on blood groups
Explanation blood groups
Work on exercises 51-65

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What is immunity and what is your immune system?

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Last lesson:

What is the role of the lymphatic system in immunity?

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Virus

Bacteria

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First line of defence

Skin/Endoderm

Mucous layers

HCl in stomach

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White blood cells

Guardians of our bodies against antigens/pathogens

3 types:

Macrophages (second line of defense = non-specific)

Third line of defense = specific:

B-cells (antibody producing)
T-cells (killing infected cells in your body)

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Second line of defense:

Phagocytosis - non-specific immunity

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Third line of defense (specific)

- White blood cells and antibodies can recognize the surface molecules (proteins) of pathogens (or other substances) that are strange to our body.

= antigen

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Antibody production

- specific immunity

Neutralization of pathogen

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ABO system- agglutination

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Work to be done

2.7: Blood groups concept list/ summary

Exercises 51 – 65

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