extrinsic pathway

External coagulation route

The extrinsic pathway is one of two cascades that trigger blood clotting, activated when tissue damage exposes blood to tissue factor outside the blood vessels.

It's called extrinsic because the trigger comes from outside the bloodstream, unlike the intrinsic pathway, which responds to factors within the blood itself.

Both pathways converge to form a clot.

Related

hemostasis · fibrin · thrombin · platelets · wound · injury · tissue damage · bleeding · prothrombin · trauma · vascular · membrane · phospholipid · activation · proteases · serine · intrinsic · hemorrhage

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extrinsic, extrinsically, pathway, path, pathways, extra, exterior, external, externally

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