Unit 3: The circulatory system

§3.1 Blood

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This lesson contains 49 slides, with interactive quizzes and text slides.

Items in this lesson

Unit 3: The circulatory system

§3.1 Blood

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What do you know about blood?

Slide 2 - Mind map

Blood

The transportation system of your body

Consists of blood plasma (±55%) and blood cells (±45%)

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What is blood plasma?

91% water

7% blood proteins

2% dissolved substances

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What blood cells are there?

Slide 5 - Open question

Blood cells

Red blood cells

White blood cells

Platelets

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Red blood cells

The majority of blood cells (±25 * 10¹²cells)

Disc shaped, no nucleus

Carry oxygen/CO₂ through your body

They use the protein haemoglobin

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White blood cells

Elimination of pathogens

No fixed shape, can move through smallest openings

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Platelets

Broken cell parts

Play an important role in blood clotting

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§3.1

Make 1-4, 6-10

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Unit 3 Circulatory system

§3.2 The circulatory system

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Blood vessels

'Roads' of blood

3 types:

- Arteries

- Veins

- Capillaries

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3 types of blood vessels

Blood vessels in a human hand

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What does the red colour mean? And the blue colour?

Slide 14 - Open question

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Double circulatory system

Pulmonary circulation

'short circulation'

Systemic circulation

'long circulation'

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Make §3.2

Assignment 4, 7, 8

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Unit 3 Circulatory system

§3.2 The circulatory system

Slide 18 - Slide

This lesson

Structure of arteries, veins and capillaries

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Arteries

From heart towards organs

Thick muscle layer

High blood pressure

Deeper in the body

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Veins

From organs towards heart (exception: portal vein)

Thin muscle layer; valves

Low blood pressure

Close to body surface

Slide 21 - Slide

Valves

Slide 22 - Slide

Capillaries

Very thin cell wall; thickness of 1 cell layer

Ideal for gas/nutrient exchange

movements of white blood cells

Slide 23 - Slide

Make §3.2

Exercise 1-4, 6-10

Slide 24 - Slide

Unit 3: The Circulatory System

§3.3 The heart

Slide 25 - Slide

The heart

Slide 26 - Slide

Blood flow

Right & Left from your own perspective

Right ventricle --> pulmonary circulation

Left ventricle --> systemic circulation

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Cardiac cycle

Cardiogram

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Make §3.3

3, 5, 6, 7, 8, 9

Slide 29 - Slide

Unit 3: The Circulatory System

§3.5 Immunity

Slide 30 - Slide

What is immunity?

Slide 31 - Mind map

Virus

Bacteria

Slide 32 - Slide

First line of defence

Skin/Endoderm

Mucous layers

HCl in stomach

Slide 33 - Slide

White blood cells

Guardians of our bodies against antigenes/pathogens

2 types:

Macrophages

B-cells/T-cells (antibody producing)

Slide 34 - Slide

Phagocytosis - non-specific immunity

Slide 35 - Slide

Antibody production

- specific immunity

Neutralization of pathogen

Slide 36 - Slide

Make §3.5

1, 2, 6, 9

Slide 37 - Slide

Unit 3: The Circulatory System

§3.5 Immunity II

Slide 38 - Slide

This lesson

Natural immunity

Artificial immunity

Allergies

Slide 39 - Slide

Natural immunity

Memory cells

Remember a specific pathogen in blood

Slide 40 - Slide

Antibody production after infection

Slide 41 - Slide

Smallpox

Poliomyelitis

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Artificial immunity

Vaccinations

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Allergic response

Hypersensitive immune response

Slide 44 - Slide

Asthma

Wasp allergy

Slide 45 - Slide

Make §3.5

Exercise 1-4, 6-11

Slide 46 - Slide

Unit 3: The Circulatory System

§3.6 Healthy lifestyles

Slide 47 - Slide

How to live healthy?

Form groups of 6 persons and choose a subject:

Smoking

Alcohol

Unhealthy food

Sport

Psychological Stress

Slide 48 - Slide

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 - Slide

Unit 3: The circulatory system

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