thrombopoietin
False. Coagulation starts almost instantly after an injury and ends in a fibrin clot.
Platelet
blood
Cell fragments in the blood are platelets and they are involved in blood clotting.
Vasoconstriction, platelet plug formation and clotting of blood.
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.
the three steps of hemostasis are :- (1) vasoconstrictiion (2) blood platelet plug formation (3) coagulation of blood
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.
Red Blood Cells Answer#2 platelet
False. This happens when a clot is formed
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.
A fragment of a blood cell called a megokaryocte, is responsible for blood clotting. This fragment is called a platelet.
Hemostasis is when the blood is outside the body by way of an injury. The vessels constrict and cause clotting to stop the bleeding.
Normally the beginning of a blood clot, platelet plug formation, doesn't occur unless the platelets are exposed to the underlying collagen fibers. That doesn't happen unless the blood vessel has been damaged so clots usually only occur in response to a damaged blood vessel.
thrombopoietin
A platelet plug is formed through the following processes in order to literally plug a hole in the wall of the vascular lumen: