Final answer:
The primary function of a thrombocyte is helping the blood clot by forming a plug and releasing clotting chemicals.
Step-by-step explanation:
The primary function of a thrombocyte, also known as a platelet, is helping the blood clot. When a blood vessel is damaged, thrombocytes gather at the site and form a plug to stop the bleeding. They also release chemicals that stimulate the clotting process, leading to the formation of a blood clot.
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