YR3_T2_LSN7

• Biologie
• Middelbare school
• havo
• Leerjaar 3

YR3_T2_LSN7

TOPIC 2

PATHOGENS & DISEASES

Immunity

THEORY:

• I understand the difference in innate and adaptive immune system
• I understand the difference in specific and nonspecific immune system
• I know what parts belong to the adaptive immune system
• I understand what role antigen presentation plays in the adaptive immune system
• I understand how the adaptive immune system works to achieve memory

LESSON 7 - Learning goals

SKILLS:

• I can explain what immunity is.
• I can explain what barriers in the human body contribute to immunity
• I can define and explain the differences between the innate and adaptive immune system.
• I can explain what phagocytes are and how they contribute to immunity
• I can explain what lymphocytes are and how they contribute to immunity

WORD:

• innate immunity
• adaptive immunity
• barrier function
• phagocytosis
• lymphatic system
• lymph nodes
• memory cell

LESSON 7 - Keywords

TB p. 147-148

Write down your key words (leave spaces for definitions).

Read the textbook pages as seen above. Add any definitions you find in the text. (maybe in pencil)

Watch the video after this slide. 

Adapt and complete the definitions of the key words.

LINES OF DEFENCE

The immune system counters attacks from pathogens in three lines of defense:

1. Barriers: keeping the pathogens out

2. Phagocytes: attacking and wiping out invaded pathogens 

3. Lymphocytes: learning from phagocytes how to specifically and effectively kill a certain type of pathogen

LINES OF DEFENCE

LINE 1: BARRIERS

• skin
• mucosal membranes
• stomach acid
• antibacterial proteins

LINE 2: PHAGOCYTES

phagocytes are able to perform phagocytosis

dif

dendritic cells

macrophages

neutrophils

phagocytes that display parts of pathogen on there membranes for display and presentation

phagocytes that patrol in tissues and kill off pathogens. They can be controlled by lymphocytes (line 3)

phagocytes that kill off pathogens by killing themselves

different types of phagocytes

lymph vessels, lymph nodes, bone marrow, spleen and thymus

sewage system of your body

drained tissue fluid is sent to lymph nodes for screening

here the dendritic cell presents its pathogen parts (antigens)

Lymphatic system

To what part of the immune system do these lines of defence belong?

Innate immune system

Adaptive immune system

Macrophage

B-Lymphocyte

T-Lymphocyte

Dendritic cell

Neutrophil

How is the adaptive immune system also called?

1. specific immune system
2. aspecific immune system
3. innate immune system
4. barrier system

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PATHOGENS PROJECT