Answer:
Blood is a
connective tissue. It has many cellular components. Thrombocytes or platelets are
one of them.
Thrombocytes or
platelets are found in blood. There number in the blood is 250,000/cubic mL of
blood. They are formed in bone marrow and their life span is one week.
When an
injury is caused in the blood vessel, bleeding starts, and the platelets are disintegrated
to release the clotting factor 3 called thromboplastin. This in presence of ions activate
prothrombokinase. A series of reactions ultimately occurs which causes blood to
clot and plug the injured blood vessel thus preventing further loss of blood.
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