Phlebotomy Technician Practice Exam (NCPT/CPT)

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Where are platelets formed?

  1. Bone marrow

  2. Liver

  3. Spleen

  4. Kidneys

The correct answer is: Bone marrow

You should choose option A as bone marrow is the primary place where platelets are formed. Bone marrow is a spongy tissue found in the center of bones, which is responsible for producing red blood cells, white blood cells, and platelets. While the liver, spleen, and kidneys are all important organs in the body, they do not produce platelets. The liver primarily helps with detoxification and protein synthesis, the spleen helps filter blood and recycle old red blood cells, and the kidneys filter waste from the blood and produce urine. Therefore, they are not involved in the production of platelets and should not be chosen as the correct answer.

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