Prepare for the CalRegional Phlebotomy Exam with practice tests, flashcards, and multiple choice questions. Each question is equipped with helpful hints and explanations. Get ready to ace your certification!

Multiple Choice

Which blood cell is involved in clotting?

Clotting relies on platelets, the tiny cell fragments known as thrombocytes, to start and support the hemostatic process. When a vessel is injured, thrombocytes quickly adhere to exposed collagen and to one another, forming a temporary platelet plug. They become activated and release signaling molecules that recruit more platelets, amplifying the plug. In addition, platelets provide a surface for coagulation factors to assemble, helping convert fibrinogen into fibrin to stabilize the clot. Erythrocytes, or red blood cells, mainly carry oxygen and do not participate in forming clots. Hepatocytes are liver cells that synthesize many clotting factors, contributing to the clotting system overall, but they are not blood cells involved in the clotting process itself. Leukocytes are white blood cells involved in immune defense, not in creating clots.

Clotting relies on platelets, the tiny cell fragments known as thrombocytes, to start and support the hemostatic process. When a vessel is injured, thrombocytes quickly adhere to exposed collagen and to one another, forming a temporary platelet plug. They become activated and release signaling molecules that recruit more platelets, amplifying the plug. In addition, platelets provide a surface for coagulation factors to assemble, helping convert fibrinogen into fibrin to stabilize the clot.

Erythrocytes, or red blood cells, mainly carry oxygen and do not participate in forming clots. Hepatocytes are liver cells that synthesize many clotting factors, contributing to the clotting system overall, but they are not blood cells involved in the clotting process itself. Leukocytes are white blood cells involved in immune defense, not in creating clots.