Sandbox 72: Difference between revisions
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== | ==A FIBRIN b== | ||
When you cut yourself, you bleed, but the bleeding rapidly stops. Blood has a built-in emergency repair system that quickly blocks any damage to the circulatory system, creating a temporary patch that allows time for more permanent repairs. Three basic mechanisms are at work. First, platelets (small fragments of blood cells that circulate in the blood) clump at the site of the wound, forming a weak plug. Second, neighboring blood vessels constrict, reducing the amount of blood flowing into the area. Finally, the protein fibrin assembles into a tough network that clots the blood and forms an insoluble blockage. Together, these methods stop the loss of blood and create a sturdy scab to protect the area as you heal. | |||
Replace the PDB id (use lowercase!) after the STRUCTURE_ and after PDB= to load | Replace the PDB id (use lowercase!) after the STRUCTURE_ and after PDB= to load | ||
Revision as of 14:09, 22 April 2009
Please do NOT make changes to this Sandbox until after April 30, 2009. Sandboxes 60-80 are reserved until then for use by students of East High, Buffalo NY.
A FIBRIN bWhen you cut yourself, you bleed, but the bleeding rapidly stops. Blood has a built-in emergency repair system that quickly blocks any damage to the circulatory system, creating a temporary patch that allows time for more permanent repairs. Three basic mechanisms are at work. First, platelets (small fragments of blood cells that circulate in the blood) clump at the site of the wound, forming a weak plug. Second, neighboring blood vessels constrict, reducing the amount of blood flowing into the area. Finally, the protein fibrin assembles into a tough network that clots the blood and forms an insoluble blockage. Together, these methods stop the loss of blood and create a sturdy scab to protect the area as you heal.
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