plateleleri

Platelets, also known as thrombocytes, are tiny, irregular-shaped cell fragments that circulate in the blood of all mammals. They are not true cells but are derived from large precursor cells called megakaryocytes found in the bone marrow. Platelets play a crucial role in hemostasis, the process of stopping bleeding. When a blood vessel is injured, platelets are activated and adhere to the site of damage. They then aggregate together, forming a temporary plug that seals the wound.

In addition to their role in clot formation, platelets release various growth factors and signaling molecules. These substances promote the repair of damaged blood vessels and can influence other cellular processes. The average lifespan of a platelet is about 7 to 10 days. They are constantly being produced and removed from circulation. Disorders affecting platelet count or function can lead to either excessive bleeding (thrombocytopenia or platelet dysfunction) or an increased risk of abnormal blood clots (thrombocytosis). Monitoring platelet levels is an important part of routine blood tests.