2.7 blood groups

• Biologie
• Middelbare school
• havo
• Leerjaar 3

2.7 blood groups

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- Grab your laptop and books

- Join the lesson up

This lesson

15 min	Revision previous learning goals
2 min	Learning goals for 2.7
30 min	New info + exercises
3 min	Review learning goals

What is the main function of the circulatory system?

Which component of blood is needed for clotting?

1. Red blood cells
2. White blood cells
3. Platelets
4. Blood plasma

Red blood cells

White blood cells

Platelets

Blood plasma

Fluid for transport of substances throughout the body

absorb oxygen, to release it in other organs

To eliminate pathogens

parts of broken-up cells needed for clotting (coagulation).

Where does your body take up oxygen?

1. Lungs (alveoli)
2. Heart
3. Brain
4. All of the above

What is the function of blood?

1. Transportation of oxygen
2. Transportation of nutrients
3. to fight off pathogens
4. All of the above

Do arteries have valves?

1. yes, always
2. Yes, sometimes
3. No, never

Artery

Capillary

Vein

smallest vessels, only one cell layer thick, between two vessels

thick, muscular, and elastic vessel away from the heart

thinner, less elastic walls, and valves present, towards the heart

Why is the human circulatory system called a double circulatory system?

1. Because it is twice as big as a single circulatory system
2. Because it consiste of two main vessels called arteries and veins
3. Because there are two large organs involved (the heart and lungs)
4. Because it passes the heart twice

what is the function of the pulmonary circulation?

1. absorb oxygen into the blood and release carbon dioxide into the air
2. absorb carbon dioxide into the blood and release oxygen into the air

What is the function of the systemic circulation?

1. to carry oxygen and nutrients to cells
2. to absorb carbon dioxide and other waste products
3. to absorb oxygen into the bloodstream
4. to release carbon dioxide into the air

What is the name of part S

1. Red blood cell
2. White blood cell
3. Blood plasma
4. Platelet

Learning goals 2.7 Blood groups

1. What determines your blood group?

2. How do blood transfusions work?

3. Why is mixing the wrong blood types dangerous?

What kind of blood groups do
you already know?

Blood groups

Four main blood groups: A, B, AB or O

The groups are different because of the presence or absence of two kinds of chemical ‘tags’ on the red blood cells called antigens.

blood antibodies for opposite groups can be found in plasma

Which blood type(s) is someone with group A blood able to receive?

What happens if you mix non-compatible bloodtypes? 

Blood will start to form clots.

Why is this bad?

How can you find out which blood group you have?  

Rhesus factor

Another type of antigen on red blood cells

If the Rhesus antigen is found on red blood cells, this is called Rhesus positive (Rh+). If no Rhesus antigen is present this is called Rhesus negative (Rh-). Each of the four blood groups can be either Rh+ or Rh- which makes: A+, A-, B+, B-, AB+, AB-, 0+ and 0-.

1. What determines your blood group?

I don't understand it and need more explanation😟

I don't understand it, but i'll try reading my textbook first 🤓

I understand it, but I can't explain it 🙂

I understand it and I can explain it to someone else 😎

2. How do blood transfusions work?

I don't understand it and need more explanation😟

I don't understand it, but i'll try reading my textbook first 🤓

I understand it, but I can't explain it 🙂

I understand it and I can explain it to someone else 😎

3. Why is mixing the wrong blood types dangerous?

I don't understand it and need more explanation😟

I don't understand it, but i'll try reading my textbook first 🤓

I understand it, but I can't explain it 🙂

I understand it and I can explain it to someone else 😎

Make exercises:

If you think this chapter is hard start with exercises: 

1, 2, 3  5, 6, 7, 8, 9, 13, 15

If you think this chapter is easy skip the above and start with: 

9, 10, 11, 12, 13, 15

What you don't finish in class is homework for next week