2.5 The components of blood - 3

• Biology
• Middelbare school
• vwo
• Leerjaar 2

Ch. 2 The circulatory system

Materials 

- iPad

- Pen, pencil

- note book

For a mark

- No

Lessonup

- Yes

Bags

in bag closet

Phones 

in your bag /

in bag closet 

today''s program 

Homework revision: 

- did you learn your summary? 

- exercises: questions? 

2.5 The components of blood (3nd part) 

Homework

Learning objectives: 'what I am going to learn?'

I can .... 

• describe the differences between the various components of blood
• explain the functions of plasma and of the red blood cells 
• explain the functions of platelets and white blood cells

New key terms:

 red blood cell - plasma - platelet - white blood cell 

previous lesson 

Learning objectives: 'what I am going to learn?'

I can .... 

1. describe the body's first line of defences (how the body defends itself against the entry of pathogens) 
2. explain how the immune system defends against diseases
3. describe what white blood cells can do
4. explain why antibodies are specific for one pathogen/antigen 

New key terms:

pathogen - lines of defence - phagocyte - lymphocyte - antibody - antigen - immune 

assigment 1 

• copy in your note book  the following figure on the different lines of defence against pathogens*: 

*pathogen: what is it? 

pathogen 

=  a biological agent that can cause (infectious) diseases or illnesses

--> viruses, bacteria, fungi, 'protists' 

which one is missing in the figure below? 

1rst line of defences 

• defends against the entry of pathogens  
• watch the video (2:10 min) in the next slide and summarise 3 ways of this 1rst line of defences and indicate whether it is a physical or a chemical barrier. 

what does the immune system?  

• copy the figure of the previous slide
• watch the video and  write beside the copied figure 

1. phagocytosis and its 3 stages
2. what the anti-toxins do
3. explain why antibodies are specific for one pathogen/antigen 
4. how these white blood cells will help you to become immune 

• upload your work in the Google Classroom 

homework 

1. do this LessonUp lesson 2.5 - 3 (no exercises in Brick's)
2. upload you notes in the Google Classroom 
3. learn the your notes by heart