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when the endothelium of blood vessels get ruptured due to any reason(such as trauma) revealing the subendothelial layer, the platelets swing into action quickly to minimize blood loss so as to maintain homeostasis.first of all they release certain biomolecules such as serotonin so as to cause vasoconstriction.simultaneously they on coming in contact with certain proteins of the subendothelial layer release certain biomolecules that attract more and more platelets to the site of injury forming a plug so as to minimize the blood loss.this aggregated form of platlrts is called platelet plug or sometimes called the white clot.this step is the primary one in initiating clotting of blood.
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What is blood platelet plug formation?
a blockage
What three components needed for hemostasis and coagulation?
Vasoconstriction, platelet plug formation and clotting of blood.
What is a primary homeostasis?
Primary homeostasis includes vascular constriction and platelet plug( aggregate plug) formation in response to bleeding. Mainly vessel function and platelet function are mainly concerned in primary homeostasis.
What is the stimulus for a platelet plug or blood clot to form?
The stimulus for a platelet formation is bleeding where the body automatically detects if there is a presence of bleeding inside or outside the body.
Why is bleeding time shorter than clotting time?
Hemostasis occurs in a sequence: 1. Vasoconstriction 2. Formation of platelet plug 3. Formaion of clot Bleeding time is the time from the onset of bleeding till the stoppage of bleeding i.e. temporary hemoststic plug formation (platelet plug). Clotting time is the time from the onset of bleeding till the clot formation (i.e. definitive hemostatic plug). Hence, clotting time is longer then bleeding time.
What is the Platelet Count Test?
What is the Platelet Count Test?
What are the three steps of hemostasis?
the three steps of hemostasis are :- (1) vasoconstrictiion (2) blood platelet plug formation (3) coagulation of blood
What test a screening test to evaluate platelet function and to monitor changes in the blood associated with chemotherapy and radiation therapy?
Platelet Count
Which hormone regulates platelet formation?
thrombopoietin
What is released when a platelet plug is formed?
A platelet plug is formed through the following processes in order to literally plug a hole in the wall of the vascular lumen:
Coagulation starts with a vascular spasm and ends with the formation of a platelet plug?
False. Coagulation starts almost instantly after an injury and ends in a fibrin clot.
What is a platelet aggregation test agonist?
A chemical that is added to the blood sample in the platelet aggregation test to stimulate the clumping process.
