2.6 blood clotting

Question 1

how does bleeding stop?

for example from a splinter or cut

Answer 1

1st the damged blood cells narrows to reduce blood flow and limit blood loss
2nd the platelets stick to the walls around the wound and to each other (plug) and they change shape
3r fibrinogen changes into fibrin forming a net preventing more blood loss, bacteria (clot)
4th the clot hardens and slowly heas (scab) an under it skin cells are being repared
5th the scab falls off (the new skin cells pushed it) and thus the skin has healed!

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!