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Questions and Answers
What is the main site of hematopoiesis after birth?
What is the main site of hematopoiesis after birth?
- Liver
- Bone marrow (correct)
- Thymus
- Spleen
What becomes the main site of hematopoiesis after the 3rd month of fetal life?
What becomes the main site of hematopoiesis after the 3rd month of fetal life?
- Spleen
- Liver (correct)
- Bone marrow
- Thymus
Where does hematopoiesis begin during embryonic life?
Where does hematopoiesis begin during embryonic life?
- Spleen
- Thymus
- Yolk sac (correct)
- Liver
What is the term for blood cell formation outside the bone marrow under certain conditions?
What is the term for blood cell formation outside the bone marrow under certain conditions?
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Which hormone regulates erythropoiesis?
Which hormone regulates erythropoiesis?
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Study Notes
Hematopoiesis Sites
- After birth, the main site of hematopoiesis is the bone marrow
- After the 3rd month of fetal life, the liver becomes the main site of hematopoiesis
- During embryonic life, hematopoiesis begins in the yolk sac
Hematopoiesis Under Certain Conditions
- Hematopoiesis can occur outside the bone marrow under certain conditions, known as extramedullary hematopoiesis
Erythropoiesis Regulation
- Erythropoiesis is regulated by the hormone erythropoietin (EPO)
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