Free CMT Hematology & Coagulation Questions and Answers

Question 1

Which cell type is responsible for oxygen transport in blood?

Accepted Answer

Red blood cells

Answer

Red blood cells, or erythrocytes, contain hemoglobin, a protein that binds to oxygen in the lungs and transports it to tissues throughout the body. Their primary function is to deliver oxygen to cells and carry carbon dioxide away as a waste product. This makes them essential for cellular respiration and overall metabolic function, sustaining life.

Question 2

What is the function of platelets in the blood?

Accepted Answer

Assist in clot formation

Answer

Platelets, also known as thrombocytes, are small, irregular-shaped cell fragments that play a critical role in hemostasis, the process of stopping bleeding. When a blood vessel is injured, platelets aggregate at the site of injury and form a plug, initiating the coagulation cascade to form a stable blood clot. This prevents excessive blood loss and promotes wound healing.

Question 3

Which anticoagulant is commonly used for complete blood count (CBC) testing?

Accepted Answer

EDTA

Answer

Ethylenediaminetetraacetic acid (EDTA) is a common anticoagulant used for complete blood count (CBC) testing. It works by chelating calcium ions, which are essential cofactors for the coagulation cascade, thereby preventing blood from clotting. EDTA preserves cell morphology well, making it ideal for accurate hematological analysis without altering cell structure.

Question 4

What does a high INR value suggest in coagulation testing?

Accepted Answer

Increased bleeding risk

Answer

INR (International Normalized Ratio) is a standardized measure of prothrombin time (PT) used to monitor the effectiveness of oral anticoagulant therapy, such as warfarin. A high INR value indicates that the blood is taking longer to clot than normal, suggesting an increased risk of bleeding. Conversely, a low INR suggests a higher risk of clotting, requiring dose adjustment.

Question 5

Which clotting factor is deficient in Hemophilia A?

Accepted Answer

Factor VIII

Answer

Hemophilia A is a genetic bleeding disorder caused by a deficiency or defect in clotting Factor VIII. This factor is crucial for the intrinsic pathway of the coagulation cascade, and its absence leads to prolonged bleeding episodes and impaired clot formation. Hemophilia B, in contrast, is due to a Factor IX deficiency, highlighting the specificity of clotting factor disorders.

CMT - Certified Medical Technologist Practice Test

CMT - Certified Medical Technologist Practice Test

Free CMT Hematology & Coagulation Questions and Answers