Cases (EC)

Question 1

Warfarin is an anticoagulant that targets a number of clotting factors. Warfarin inhibits clotting by which of the following mechanisms(s)?

a. Activating the Vitamin K epoxide reductase complex 1
b. Depleting Vitamin K reserves
c. Stimulating gamma-carboxylation of specific clotting factors
d. A and C
e. A, B and C

Answer 1

Depleting Vitamin K reserves

Question 2

After the tooth extraction the clotting process will begin. Serotonin is an important mediator of the clotting process. Serotonin is synthesized from which of the following?

a. Tryptophan
b. Histidine
c. Tyrosine
d. Cholesterol
e. Arachidonic acid

Answer 2

Tryptophan