n.
- The stoppage of bleeding or hemorrhage.
- The stoppage of blood flow through a blood vessel or body part.
Dictionary:
he·mo·sta·sis (hē'mə-stā'sĭs, hē-mŏs'tə-) also he·mo·sta·sia
|
| 5min Related Video: hemostasis |
| Dental Dictionary: hemostasis |
| Veterinary Dictionary: hemostasis |
Arrest of the escape of blood by either natural (clot formation or vessel spasm) or artificial (compression or ligation) means, or the interruption of blood flow to a part, or the artificial stimulation of clotting, e.g. electrocautery, topical collagen.
| Wikipedia: Hemostasis |
|
|
This article does not cite any references or sources. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. (October 2009) |
Hemostasis or haemostasis (from the Ancient Greek: αἱμόστασις haimóstasis "styptic (drug)") is a complex process which causes the bleeding process to stop. It refers to the process of keeping blood within a damaged blood vessel (the opposite of hemostasis is hemorrhage). Most of the time this includes the changing of blood from a fluid to a solid state. Intact blood vessels are central to moderating blood's tendency to clot. The endothelial cells of intact vessels prevent thrombus ("clot") formation by secreting tissue plasminogen activator (t-PA) and by inactivating thrombin and adenosine diphosphate (ADP). Although hemostasis ensues, after injury to vessels overwhelming these protective mechanisms, some major arterial bleeding is unlikely to be stopped by the process. Hemostasis has three major steps: 1) vasoconstriction, 2) temporary blockage of a break by a platelet plug, and 3) blood coagulation, or formation of a clot that seals the hole until tissue are repaired.
Hemostasis is maintained in the body via three mechanisms:
Eventually, as the damaged vessel repairs itself, the clot retracts and is slowly dissolved by the enzyme plasmin.
|
|||||||||||||||||||||
| This medical article is a stub. You can help Wikipedia by expanding it. |
| This cardiovascular system article is a stub. You can help Wikipedia by expanding it. |
This entry is from Wikipedia, the leading user-contributed encyclopedia. It may not have been reviewed by professional editors (see full disclaimer)
| angiotripsy | |
| Coagulate (in medicine) | |
| cyanoacrylate glue |
| Which vitamin is important for hemostasis? | |
| What are the three phases of hemostasis? | |
| Whst does the word hemostasis refer to? |
Copyrights:
![]() | Dictionary. The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved. Read more | |
![]() | Dental Dictionary. Mosby's Dental Dictionary. Copyright © 2004 by Elsevier, Inc. All rights reserved. Read more | |
![]() | Veterinary Dictionary. Saunders Comprehensive Veterinary Dictionary 3rd Edition. Copyright © 2007 by D.C. Blood, V.P. Studdert and C.C. Gay, Elsevier. All rights reserved. Read more | |
![]() | Wikipedia. This article is licensed under the Creative Commons Attribution/Share-Alike License. It uses material from the Wikipedia article "Hemostasis". Read more |
Mentioned in