Blood clotting factors: Prothrombin, essential for coagulation, is released/produced by which organ? Consider the site of plasma protein synthesis and vitamin K–dependent factors. Choose the correct organ.
General Knowledge
Biology
Difficulty: Easy
Choose an option
-
ALiver
-
BPlatelets
-
CBone marrow
-
DKidney
Answer
Correct Answer: Liver
Explanation
Given data
- Asked: source of prothrombin.
Concept / ApproachLiver synthesizes most plasma proteins, including prothrombin (Factor II), a vitamin K–dependent clotting factor.
ClarificationPlatelets provide platelet factors but do not synthesize prothrombin; bone marrow makes blood cells, not this plasma protein.
Final AnswerLiver.