do blood clots when blood is expoused to air
 

Asked by P VISHNU | 25th Sep, 2015, 01:48: PM

Expert Answer:

Yes, blood begins to clot 99% of the times when it is outside the blood vessels (circulatory system). 
This is because, the proteins that play an important role in blood clotting are present in the blood in the inactive form, under normal conditions. When the blood vessel ruptures and the blood is exposed, the proteins in the blood interact with certain factors present on the outside of the blood vessels and activates the blood clotting proteins. As a result of this the blood starts clotting and forms a clot to stop the blood flow and subsequent blood loss. 

Answered by Aniket Vyawahare | 25th Sep, 2015, 05:57: PM

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