This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Blood, Subject name: Pathology
For what procedure is the instrument depicted in the diagram used? 
Select and explain. 
A. Bone marrow biopsy, B. Pleural biopsy, C. Kidney biopsy, D. Liver biopsy
A: Bone marrow biopsy
Answer: A: Bone marrow biopsy 
Explanation: Ans. a. Bone marrow biopsy (Ref: Dacie Practical Hematology W/e p163)The given diagram shows various types of bone marrow biopsy needles.Bone Marrow Biopsy NeedlesNeedles most commonly used for obtaining bone marrow aspirates from sternum are Salah, Klima & Jamshidi needlesQ.Salah NeedleKlima NeedleJamshidi Needle* Salah sternal puncture needle is a wide-bore needle for obtaining samples of red marrow from sternum.* The needle is advanced into the marrow cavity with the stylet locked in place.* The stylet is then removed and a syringe used to aspirate the marrow.* The stylet is in place for advancement through soft tissue and cortex.* On reaching marrow, the needle is advanced without the stylet to create a core sample.* The probe (hooked) is used to expel the sample into formalin.