Vérlemezek

Vérlemezek, also known as thrombocytes, are small, irregular-shaped cell fragments found in blood. They are produced in the bone marrow from megakaryocytes and play a crucial role in hemostasis, the process of stopping bleeding. When a blood vessel is injured, vérlemezek aggregate at the site of injury, forming a temporary plug. They also release various substances that promote blood clotting, such as clotting factors and vasoconstrictors.

The normal count of vérlemezek in a healthy adult is typically between 150,000 and 450,000 per microliter of blood. A low count, known as thrombocytopenia, can lead to increased bleeding and bruising. Conversely, a high count, called thrombocytosis, can increase the risk of blood clots. Various medical conditions, medications, and treatments can affect vérlemez counts.

Vérlemezek are essential for maintaining the integrity of the circulatory system. Their ability to rapidly respond to injury and initiate the clotting cascade prevents excessive blood loss and supports tissue repair. Research continues to explore the multifaceted roles of vérlemezek beyond their primary hemostatic function, including their involvement in inflammation and immune responses.