Unit 3: The circulatory system

Unit 3: The circulatory system
§3.1 Blood
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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 * 1012 cells )

Disc shaped, no nucleus

Carry oxygen/CO2 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