What is the primary function of thrombocytes (platelets)?

Thrombocytes, commonly known as platelets, have a primary role in facilitating blood clotting, which is essential for stopping bleeding when injuries occur. When a blood vessel is damaged, platelets are activated and quickly accumulate at the site of injury. They adhere to the exposed tissue and each other, forming a temporary "platelet plug." Additionally, activated platelets release chemicals that promote the coagulation cascade, leading to the formation of fibrin strands that stabilize the platelet plug, ultimately resulting in a stable blood clot. This process is crucial for maintaining hemostasis and preventing excessive blood loss.

The other options do not align with the primary function of platelets. While transporting oxygen is the responsibility of red blood cells, antibodies are produced by B lymphocytes as part of the immune response, and fighting infections primarily involves white blood cells rather than platelets. Understanding the specific function of platelets emphasizes their critical role in hemostasis and overall vascular health.