Paper 2: Blood Flashcards
1
Q
What 4 parts is blood made out of?
A
Plasma, red blood cells, white blood cells and platelets
2
Q
What is plasma?
A
The liquid part of blood
3
Q
What does plasma do to blood cells?
A
Carry’s it through blood vessels
4
Q
What does plasma contain?
A
Many dissolved substances (e,g carbon dioxide and glucose)
5
Q
What percentage of blood is plasma?
A
55%
6
Q
What percentage of blood is red blood cells?
A
45%
7
Q
What percentage of blood is white blood cells and platelets?
A
<1%
8
Q
What do white blood cells do?
A
Attack pathogens in the bidy
9
Q
What are platelets?
A
Fragments of larger cells
10
Q
What is the function of a platelets?
A
To cause blood to clot when a blood vessels has been damaged
