Question

multiple choice question
antithrombin is secreted by which organ?

skin
pancreas
liver
heart

Explanation:

Antithrombin is a protein that plays a role in blood coagulation regulation. The liver is the organ responsible for secreting antithrombin. The skin is mainly for protection, sensation, etc., the pancreas is involved in digestion and blood sugar regulation, and the heart pumps blood, so they don't secrete antithrombin.

Answer:

C. Liver (assuming the options are labeled as A. Skin, B. Pancreas, C. Liver, D. Heart)