2.6 blood clotting

Question 1

how does bleeding stop?

for example from a splinter or cut

Answer 1

1st platelets are activated by xhemicals that are released when a blood vessel is damaged
2nd the platelets stick to the walls around the wound and to each other
3rd they change shape to form a cover

Question 2

is the cover ove rplatelets strong and thick or weak and easily tearable?

Answer 2

very eeak, and easily tearable

Question 3

what happenes when platelets change shape to cover the whatever?

Answer 3

fibronogen change into thread-like fibres called fibrin, forming a net across the wound site.

so that the platelets stay in place (they are very weak)

Question 4

what does the fibrin net do except keeping the platelets in place?

Answer 4

traps blood cells and plasma > preventing more blood loss, while preventing bacteria and other germs from entering the wound

Question 5

what’s the network of platelets, plasma and blood cells called?

Answer 5

a clot

Question 6

what happen’s below the clot and what’s it called?

Answer 6

your skin cells are being repaird which is called a scab

Question 7

what’s haemophilia?

Answer 7

an inherited diseas in which somebody’s blood cannot clot properly, meaning a person with haemophilia bleds much more

Question 8

what are the two kinds of haemophilia and what are their meaning?

Answer 8

A: 80% of cases. when factor VIII is lacking
B: when factor IX is lacking

Question 9

is there medicine for haemophilia now?

Answer 9

Yes , there is !

how lovely!