B3.3.4 - Blood Typing Flashcards Preview

SHHS - Science - B3.3 Detection - Year 9 > B3.3.4 - Blood Typing > Flashcards

Flashcards in B3.3.4 - Blood Typing Deck (18)
Loading flashcards...
1

How many litres of blood do you have in your body?

5 litres

2

What are the main components of blood?

1. Red blood cells
2. White blood cells.
3. Plasma
4. Platelets

3

What is the function of red blood cells?

1. To carry oxygen around the body.
2. To transport carbon dioxide from the body back to the lungs

4

What is the function of white blood cells?

To fight disease
(engulf pathogens to kill, produce antibodies to kill, produce antitoxins to stop toxins)

5

What is the function of plasma?

To carry blood cells, digested food, waste, hormones etc.

6

What is the function of platelets?

they are fragments of cells that help blood to clot.

7

Describe a red blood cell.

- small
- disc-like shape with no nucleus
- contain 'haemoglobin' which allows oxygen to bind to them

8

Describe a white blood cell.

- large
- have a nucleus
(engulf pathogens to kill, produce antibodies to kill, produce antitoxins to stop toxins)

9

Describe plasma

- straw coloured liquid.
- mainly water (90%)

10

Name the 4 blood groups.

A
B
AB
O

11

Blood groups are determined by what?

Antigens (protein molecules) on the surface of red blood cells.

12

What is an antigen?

A protein molecule found on the surface of blood cells that acts like a label.

13

Which antigens are found on blood group A?

'A' antigens

14

Which antigens are found on blood group B?

'B' antigens

15

Which antigens are found on blood group AB?

Both 'A' and 'B' antigens

16

Which antigens are found on blood group O?

'O' antigens

17

Why is it important to know your blood group?

In case you need a blood transfusion.
Receiving the wrong blood can be life threatening.
Your white blood cells destroy foreign antigens.

18

What is a blood transfusion?

When someone else's blood is put into your body to replace lost blood.