McqMate
| Q. |
Which is the anticoagulant substance in blood? |
| A. | Fibrinogen |
| B. | Heparin |
| C. | Thrombin |
| D. | Globin |
| Answer» B. Heparin | |
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Explanation: Heparin, a highly sulfated glycosaminoglycan, is widely used as an inject able anticoagulant, and has the highest negative charge density of any known biological molecule. It can also be used to form an inner anticoagulant surface on various experimental and medical devices such as test tubes and renal dialysis machines. Although it is used principally in medicine for anticoagulation, its true physiological role in the body remains unclear, because blood anti-coagulation is achieved mostly by heparin sulfate proteoglyeans derived from endothelial cells. |
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