Endothelial derived antithrombotic factors include all of the following, except:
A. PGI2
B. NO
C. protein S
D. plasminogen
E. tissue plasminogen activator
The correct answer is: C. protein S
Endothelial-derived antithrombotic factors are molecules produced by the endothelium (the inner lining of blood vessels) that help prevent blood clotting (thrombosis). The correct options are:
– PGI2 (Prostacyclin) (A): Inhibits platelet aggregation and promotes vasodilation.
– NO (Nitric Oxide) (B): Inhibits platelet adhesion and aggregation, and promotes vasodilation.
– Plasminogen (D): Precursor to plasmin, which breaks down blood clots.
– Tissue plasminogen activator (E): Activates plasminogen to plasmin, promoting clot lysis.