Blood groups 21 march

• Biologie
• Middelbare school
• vwo
• Leerjaar 2

Blood groups & transfusions

Saving lives today!!

Red blood cells don't:

1. transport oxygen
2. transport glucose
3. transport carbon dioxide
4. transport haemoglobin

White blood cells don't:

1. produce antibodies
2. belong to the immune system
3. eat pathogens
4. transport oxygen

Why do we have white blood cells?

1. To protect us from suffocating
2. To protect us from bleeding out
3. To protect us from the cold
4. To protect us from pathogens

How do white blood cells know what to attack?

Cells have antigens on the outside of their cell membranes. White blood cells scan all the cells they meet to see if the antigens belong to your body. Antigens it doesn't recognise will be attacked.

Blood group A

Blood group B

Blood group AB

Blood group O

Antigen A

Antigen A

Antigen B

Antigen B

Antigen C

Antigen C

About how much blood does an adult human have circulating in their body?

What blood group is someone with antigen A?

1. A
2. B
3. AB
4. O

What blood group is someone with antigen A and B?

1. A
2. B
3. AB
4. O

What blood group is someone with neither antigen A nor B?

1. A
2. B
3. AB
4. O

LET’S SUMMARIZE!

• When an antigen and antibody match & bind this leads to blood clotting (very dangerous!)
  
• The different blood types have different antigens on their red blood cells and different antibodies in their blood plasma.
  
• During a blood transfusion it is very important to pay attention to the blood types.