Tech in Surgery Prep / Unit 3 TSC 065 short lesson, about 20 seconds
How Bleeding Stops
Captions available
The idea
Hemostasis, the body's way of sealing a damaged vessel, happens in three steps: vascular spasm, a platelet plug and coagulation.
In practice
The vessel's muscle contracts, platelets clump and stick at the injury, and then a clot forms from a mesh of a protein called fibrin.
Where people slip
This works well for small vessels, but a larger vessel usually needs surgical control.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
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