Regarding granulocytes, which of the following is CORRECT: a. some granulocytes

Question

Regarding granulocytes, which of the following is CORRECT: a. some granulocytes express significant amounts of hemoglobin when they begin to differentiate in the bone marrow b. some granulocytes function in the blood C. some granulocytes are not derived from hematopoietic stems cells d. some granulocytes are multinucleate e. some granulocytes are only present In the blood for a few hours after they are released from the hematopoietic cords QUESTION 19 Which of the following is derived from a stem cell that resides within a bone marrow niche: a. fibroblast b. chondroblast C. osteoprogenitor cell d. lymphoblast e. osteoblast QUESTION 20 The image below is a light micrograph of bone marrow stained with H&E.; Which numbered cell produces platelets:

Explanation / Answer

Q 18. Some granulocytes are present only present in the blood for few hours after they are released from the hematopoietic cords.

Granulocytes are a group of white blood cells that contains nucleus with multilobes (but they are not multinucleated). Neutrophiles, basophiles, eosinophiles and mast cells are the different types of granulocytes, all of which are derived from the bone marrow (granulopoiesis). Neutrophiles relatively stay for a very short period in the blood stream, say for less than 12 hours.

Q 19. Osteoblast

Osteoblasts are derived from the stem cells that are present in the bone marrow niche.

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