Biology Cardiovascular system Question #9913
Single Choice Easy

Q Which substance present in the blood acts as an anticoagulant?

ID: #9913 Cardiovascular system 100 views
Question Info
#9913Q ID
EasyDifficulty
Cardiovascular systemTopic

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  • A Fibrinogen
  • B Thrombin
  • C Globin
  • D Heparin
Correct Answer

Explanation

Heparin is a natural anticoagulant present in the blood that is produced by basophils and mast cells. It works by binding to the enzyme inhibitor antithrombin III (AT), which in turn inactivates thrombin, factor Xa, and factor IIa. These factors are involved in the coagulation cascade of blood, which can lead to the formation of blood clots. By blocking these factors, heparin prevents blood clots from forming and is used as a medication to prevent and treat blood clots in medical conditions such as deep vein thrombosis, pulmonary embolism, and heart attacks.

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