What is the function of thrombocytes?

Thrombocytes, also known as platelets, play a critical role in hemostasis, which is the process of blood clotting. When there is damage to a blood vessel, thrombocytes are activated and aggregate at the site of injury. They stick to the exposed tissue and each other, forming a plug that helps to seal the wound and prevent further bleeding. This clotting process is essential for maintaining the integrity of the vascular system and ensuring that bleeding is controlled.

The other functions mentioned in the question are performed by different components of the blood. For example, the transport of oxygen is primarily the function of red blood cells, which contain hemoglobin that binds and carries oxygen throughout the body. The immune response, which involves fighting infections, is primarily carried out by white blood cells. Nutrients are also transported through plasma in the bloodstream and do not pertain to the function of thrombocytes. Thus, the correct answer highlights the specific and vital role that thrombocytes have in the blood clotting process.