Question 9

Thrombocytes are primarily responsible for blood clotting.

Thrombocytes, also known as platelets, play a crucial role in the process of hemostasis, which is the cessation of bleeding. Their primary function is to aggregate at sites of vascular injury to form clots, thus preventing excessive blood loss.

A) Blood clotting

This option is correct as thrombocytes are essential for the clotting process. When a blood vessel is injured, platelets adhere to the damaged area, become activated, and release chemical signals that recruit more platelets to form a stable clot.

B) Oxygen transport

This option is incorrect because oxygen transport is primarily the function of red blood cells, not thrombocytes. Red blood cells contain hemoglobin, which binds to oxygen and facilitates its transport throughout the body.

C) Immune response

This option is also incorrect. While thrombocytes do have some role in inflammation and may interact with immune cells, their main function is not to mediate the immune response. This function is primarily attributed to white blood cells.

D) Hormone production

This option is incorrect as well. Thrombocytes do not produce hormones; their primary role is in the formation of blood clots. Hormones are typically produced by glands in the endocrine system, not by platelets.

Conclusion

Thrombocytes are vital for blood clotting, as they are directly involved in the formation of clots to prevent blood loss from injuries. All other options fail to represent the primary function of thrombocytes, emphasizing that their role is specific to hemostasis rather than oxygen transport, immune response, or hormone production.