❣️Hola!mention the function of thrombocytes other than clotting of blood....
Answers
Answer:
Platelets have the following functions:
Secrete vasoconstrictors which constrict blood vessels, causing vascular spasms in broken blood vessels.
Form temporary platelet plugs to stop bleeding.
Secrete procoagulants (clotting factors) to promote blood clotting.
Dissolve blood clots when they are no longer needed.
Answer:
Thrombocytes
Thrombocytes (platelets) play an important role in hemostasis, by plugging and repairing damaged blood vessels, thus preventing blood loss. They also participate in a cascade of events that leads to blood clotting by triggering the release of a series of coagulation factors. In the first step, platelets are activated by various substances, including collagen from damaged tissue, as well as ADP (adenosine diphosphate) and thromboxane A2, secreted by activated platelets. Activation causes platelets to become adhesive, which facilitates their attachment to damaged tissues and to each other to form clumps. The penultimate step in coagulation is the formation of fibrin from fibrinogen. Fibrin filaments enmesh platelets and red and white blood cells to form a plug, which contracts to form a clot. Because this is a multi-step process, separate in vitro tests are often carried out for inhibition of platelet aggregation by collagen, ADP, arachidonic acid, or other substrates.
Although the blood clotting mechanism is essential for controlling blood loss, it can also lead to ischemic diseases such as strokes and heart attacks, due to thrombosis and consequent obstruction of blood flow. In order to maintain an optimal supply of blood to tissues, various mechanisms exist to prevent excessive and counterproductive clotting.