After birth, Erythropoiesis starts ina)Liverb) Spleenc) Kidneysd)Bone marrowCorrect answer is option 'D'. Can you explain this answer?

Question

​After birth, Erythropoiesis starts ina)Liverb) Spleenc) Kidneysd)Bone marrowCorrect answer is option 'D'. Can you explain this answer?

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Erythropoiesis starts in red bone marrow

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Answer

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Ans will be bone marrow

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As per adult stage erythropoiesis is starts in red bone marrow but as per in fetus stage is starts in liver and spleen.

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Erythropoiesis (from Greek 'erythro' meaning 'red' and 'poiesis' meaning 'to make') is the process which produces red blood cells (erythrocytes). ... By the third or fourth month, erythropoiesis moves to the liver. After seven months, erythropoiesis occurs in the bone marrow.

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This answer is wrong it starts in bone marrow in adults .

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Bone marrow

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We know that erythropoiesis is a process of formation of R.B.C... it first takes place in liver then followed by red bone marrow.. its takes at the tym of 6 months and it is the principle site of erythropoiesis

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Erythropoiesis start in firstly yolk sac of an embryo and at that time organ of body not form and yolk sac form blood vessels of liver then after yolks sac liver start erythropoiesis and then bone marrow so option d is correct

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In the early development of a fetus , erythropoiesis take place in the yolk sac, spleen and liver.After birth, all erythropoiesis occurs in bone marrow.

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Spleen

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LIVER IS CORRECT

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Option (a) erythropoiesis is a process of production of red blood cells(RBC) which is done by red bone marrow

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Correct answer is option.d. liver

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Embryonic life m hi phle to spleen m and bad m liver but janam ke bad m bone marrow  m hi banty h bro . Iska answer bone marrow  jayga  ok.

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In child it occures in liver and spleen but in adult in red bone marrow.

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Red bone marrow

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Erythropoiesis begins in liver and occur in red bone marrow

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Liver

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Till 5th month of baby the erythropoesis is start in liver

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Erythropoiesis is the process of formation of red blood cells (erythrocytes) from precursor cells. It is the major function of bone marrow.

Explanation:
• Before birth, erythropoiesis takes place in the liver and spleen of the fetus.
• But, after birth, the liver and spleen stop producing erythrocytes and the bone marrow takes over this function.
• Bone marrow is a type of tissue found within bones, responsible for the production of blood cells.
• It contains pluripotent stem cells that can differentiate into various types of blood cells, including erythrocytes.
• These stem cells give rise to erythroblasts, which are the precursors of erythrocytes.
• Erythroblasts undergo several stages of maturation and differentiation to become mature erythrocytes.
• The process of erythropoiesis is regulated by a hormone called erythropoietin (EPO), which is produced by the kidneys in response to low oxygen levels in the blood.
• EPO stimulates the proliferation and differentiation of erythroblasts in the bone marrow, leading to increased production of erythrocytes.

In conclusion, erythropoiesis starts in the bone marrow after birth.

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Erythropoiesis starts in red bone marrow as per NCERT

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Liver is responsible for the formation of red blood corpuscles during embryonic stage .

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Erythropoiesis starts in mesoderm of the yolk sac from third week to third month in the embryo. Between third to fifth month it occurs in the liver and spleen and from fifth month onwards hepatic phase cease to exist and erythropoiesis occurs in the red bone marrow.

DEAR I HOPE IT HELPED UUH

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Starts
1)liver
2) spleen
3) red bone marrow
4) kidney

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Ans should be dpleen because during gestetion period erythropoiesis starts in spleen in early stage

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The formation of red blood cells in blood-forming tissue. In the early development of a fetus, erythropoiesis takes place in the yolk sac, spleen, and liver. After birth, all erythropoiesis occurs in the bone marrow.

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Red bone marrow ncert says

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Erythropoiesis starts in bone marrow....

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Erythropoiesis starts in red bone marrow then kidney and then liver . but not in spleen because spleen is graveyard of RBC's .

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The answer would be red born marrow since they have mentioned 'after birth'. In foetal stage it takes place, first in yolk sac, then liver and by third month, the bone marrow.

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Bone marrow..

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Option D

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Erythropoiesis means production of RBC.
RBC r produced in bone marrow and get destroyed in liver and spleen so liver and spleen are known as grave yard.

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In early foetus erythropoesis takes place in mesodermal cells of yolksac.By third or fourth month erythropoesis moves to liver.After seven months it occurs in bone marrow.

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After birth it will occur in bone marrow

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D is correct answer

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At embryonic stage erythropoesis starts in liver.

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A option red bone marrow correct answer

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Erythropoiesis comes from the greek word Erythro' meaning red and 'poiesis' meaning 'to make'.It is a process which produces red blood cells.
It is stimulated by decreased oxygen in circulation, and is detected by the kidneys., which then secrete hormone ' erythropoietin'. This hormone stimulates the red blood cell precursors., which then acivte the production of red blood cells in hemopoietic tissues, and this usually occurs in the bone marrow.
The right answer is ERYTHROPOIESIS ocurs in the red bone marrow.

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Erythropoesis occurs in liver during fetal stage i.e.aftr 3rd month of pregnancy
Where as in adults the erythropoesis takes place in bone marrow

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Erethropoisis start in liver correction

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Ans is must bone marrow i.e, red

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A red bone marrow

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In the question it is clearly saying after birth. and after birth red bone marrow is site of RBC formation. Before birth during intrauterine life the sequence is as
firstly yolk sac
then liver
and finally bone marrow.
and after birth th red bone marrow.

Answer

D

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