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Unit 3: The circulatory system
Unit 3: The circulatory system
§3.1 Blood
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Biologie
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Leerjaar 3
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Unit 3: The circulatory system
§3.1 Blood
Slide 1 - Tekstslide
What do you know about blood?
Slide 2 - Woordweb
Blood
The transportation system of your body
Consists of blood plasma (±55%) and blood cells (±45%)
Slide 3 - Tekstslide
What is blood plasma?
91% water
7% blood proteins
2% dissolved substances
Slide 4 - Tekstslide
What blood cells are there?
Slide 5 - Open vraag
Blood cells
Red blood cells
White blood cells
Platelets
Slide 6 - Tekstslide
Red blood cells
The majority of blood cells (±25 * 10
12
cells
)
Disc shaped, no nucleus
Carry oxygen/CO
2
through your body
They use the protein
haemoglobin
Slide 7 - Tekstslide
White blood cells
Elimination of pathogens
No fixed shape, can move through smallest openings
Slide 8 - Tekstslide
Platelets
Broken cell parts
Play an important role in blood clotting
Slide 9 - Tekstslide
§3.1
Make 1-4, 6-10
Slide 10 - Tekstslide
Unit 3 Circulatory system
§3.2 The circulatory system
Slide 11 - Tekstslide
Blood vessels
'Roads' of blood
3 types:
-
Arteries
-
Veins
-
Capillaries
Slide 12 - Tekstslide
3 types of blood vessels
Blood vessels in a human hand
Slide 13 - Tekstslide
What does the red colour mean? And the blue colour?
Slide 14 - Open vraag
Slide 15 - Tekstslide
Double circulatory system
Pulmonary circulation
'short circulation'
Systemic circulation
'long circulation'
Slide 16 - Tekstslide
Make §3.2
Assignment 4, 7, 8
Slide 17 - Tekstslide
Unit 3 Circulatory system
§3.2 The circulatory system
Slide 18 - Tekstslide
This lesson
Structure of arteries, veins and capillaries
Slide 19 - Tekstslide
Arteries
From heart towards organs
Thick muscle layer
High blood pressure
Deeper in the body
Slide 20 - Tekstslide
Veins
From organs towards heart (exception: portal vein)
Thin muscle layer; valves
Low blood pressure
Close to body surface
Slide 21 - Tekstslide
Valves
Slide 22 - Tekstslide
Capillaries
Very thin cell wall; thickness of 1 cell layer
Ideal for gas/nutrient exchange
&
movements of white blood cells
Slide 23 - Tekstslide
Make §3.2
Exercise 1-4, 6-10
Slide 24 - Tekstslide
Unit 3: The Circulatory System
§3.3 The heart
Slide 25 - Tekstslide
The heart
Slide 26 - Tekstslide
Blood flow
Right & Left from your own perspective
Right ventricle --> pulmonary circulation
Left ventricle --> systemic circulation
Slide 27 - Tekstslide
Cardiac cycle
Cardiogram
Slide 28 - Tekstslide
Make §3.3
3, 5, 6, 7, 8, 9
Slide 29 - Tekstslide
Unit 3: The Circulatory System
§3.5 Immunity
Slide 30 - Tekstslide
What is immunity?
Slide 31 - Woordweb
Virus
Bacteria
Slide 32 - Tekstslide
First line of defence
Skin/Endoderm
Mucous layers
HCl in stomach
Slide 33 - Tekstslide
White blood cells
Guardians of our bodies against
antigenes/pathogens
2 types:
Macrophages
B-cells/T-cells (antibody producing)
Slide 34 - Tekstslide
Phagocytosis - non-specific immunity
Slide 35 - Tekstslide
Antibody production
- specific immunity
Neutralization of pathogen
Slide 36 - Tekstslide
Make §3.5
1, 2, 6, 9
Slide 37 - Tekstslide
Unit 3: The Circulatory System
§3.5 Immunity II
Slide 38 - Tekstslide
This lesson
Natural immunity
Artificial immunity
Allergies
Slide 39 - Tekstslide
Natural immunity
Memory cells
Remember a specific pathogen in blood
Slide 40 - Tekstslide
Antibody production after infection
Slide 41 - Tekstslide
Smallpox
Poliomyelitis
Slide 42 - Tekstslide
Artificial immunity
Vaccinations
Slide 43 - Tekstslide
Allergic response
Hypersensitive immune response
Slide 44 - Tekstslide
Asthma
Wasp allergy
Slide 45 - Tekstslide
Make §3.5
Exercise 1-4, 6-11
Slide 46 - Tekstslide
Unit 3: The Circulatory System
§3.6 Healthy lifestyles
Slide 47 - Tekstslide
How to live healthy?
Form groups of 6 persons and choose a subject:
Smoking
Alcohol
Unhealthy food
Sport
Psychological Stress
Slide 48 - Tekstslide
Search for effects on the circulatory system (±20 min)
Look for positive and negative effects (preferably on the WWW)!
Discussion afterwards (±3 min per subject)
Slide 49 - Tekstslide
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