NHA Phlebotomy Certification Practice Exam

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Prepare for the NHA Phlebotomy Certification Exam. Learn with study guides and multiple choice questions. Each question offers detailed explanations. Achieve success on your certification test.

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What type of blood cell is primarily responsible for blood clotting?

Leukocytes
Erythrocytes
Thrombocytes
Plasma cells

The correct answer is: Thrombocytes

Thrombocytes, also known as platelets, are the type of blood cells primarily responsible for blood clotting. When a blood vessel is injured, platelets are activated and quickly adhere to the site of the injury. They aggregate and release chemical signals that help to further recruit more platelets and stimulate the healing process. This aggregation creates a temporary plug that helps to stop bleeding and initiates the process of coagulation. In addition to this primary function, thrombocytes also contain granules that release substances important for clot formation and healing, making them essential to maintaining hemostasis. Understanding the role of thrombocytes is crucial for those studying phlebotomy and related medical fields, especially in terms of understanding how blood works to prevent excessive bleeding during procedures.