The immune system

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BiologieMiddelbare schoolhavo, vwoLeerjaar 2

This lesson contains 17 slides, with interactive quizzes, text slides and 1 video.

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Slide 1 - Slide

NOTES TODAY:
  • WHAT IS BLOOD MADE up OF?
  • WHAT IS THE IMMUNE SYSTEM?
  • HOW DOES THIS WORK?


Slide 2 - Slide

Blood

Slide 3 - Slide

What is blood made of?

Slide 4 - Slide

Slide 5 - Slide

Movie: the immune system
answer the following questions: 
  • Where do the leukocytes originate from?
  • How long does it take before the immune system reacts?
  • What is the name of the cells that act like PacMan?
  • What is a benefit of fever?

Slide 6 - Slide

Slide 7 - Video

Where do the leukocytes originate from?
A
red blood cells
B
bone marrow
C
brain
D
thymus

Slide 8 - Quiz

How long does it take before the immune system reacts?
A
millions of years
B
days
C
2 weeks
D
minutes

Slide 9 - Quiz

What is the name of the cells that act like PacMan?
A
red blood cells
B
T-cells
C
phagocytes
D
platelets

Slide 10 - Quiz

What is a benfit of fever?
A
you will feel sick and are going to rest
B
your immune systems works better
C
you will get thirsty and drink enough to dillute your blood
D
your body is too warm for the pathogen

Slide 11 - Quiz

Why are people that have an auto-immune disease ill?
A
their immune system attacks their own cells
B
red blood cells do not work
C
they have always a fever
D
their immune system does not recognize pathogens

Slide 12 - Quiz

Antigens:
  • Antigens are like the passport of a cell. This how your body knows if a cell does or does not belong in your body.
  • Antigens are proteins that sit on the cell wall/cell membrane of all cells in nature.

Slide 13 - Slide

Antibodies:
  • Your cells produce these to fit the antigens and so attack the pathogens. These are produced by the B-cells.
  • stick to antigens
  • make pathogens stick together
  • stop reproduction 
  • work as a gps

Slide 14 - Slide

Phagocytes:
  • The stupid soldiers
  • They attack anything with foreign antigens.
  • The also attack anything with antibodies attached
  • They can track antibodies.

Slide 15 - Slide

Lymphocytes:
  • B-cells
     - stick the antibodies together
     - produce the antibodies
     - make memory cells
  • T-Helper cells
     - identify enemies
     - activate B-cells
  • T- Killers cells
    - if need be produce toxins to kill the pathogens the phagocytes can't kill
    - produce toxins to neutralise those of the pathogens

Slide 16 - Slide

HW FOR NEXT LESSON:

  • read immunity, vaccination and allergic reaction
  • exercises 1-11


Slide 17 - Slide