What is the number 12 of blood coagulation factors?

to be honest im doing it for points

Explanation:

:/

i don’t no. suiopgohjk

thrombocytopenia, which is a deficiency in blood platelets, can cause bleeding and bruising in the dermis similar to senile purpura. other possible causes include: exposure to ultraviolet rays and aging skin are common causes of senile purpura. senile purpura may also be a sign of collagen loss in the skin and bones.