Question:
Spleen acts as a haemopoietic organ until the ....... month of gestation
Spleen acts as a haemopoietic organ until the ....... month of gestation
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Fetal haemopoiesis: yolk sac → liver/spleen → bone marrow.
Updated On: Jul 18, 2026
- 3rd month
- 5th month
- 7th month
- 9th month
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The Correct Option is B
Solution and Explanation
Step 1: Understanding haemopoiesis.
Haemopoiesis is the process of formation of blood cells. During embryonic development, different organs take part in blood formation at different stages.
Step 2: Early fetal development.
Initially, blood formation occurs in yolk sac. Later liver and spleen become important haemopoietic organs during mid-gestation.
Step 3: Role of spleen.
The spleen actively produces blood cells in early fetal life. It supports both RBC and WBC formation during this period.
Step 4: Transition of function.
After the 5th month of gestation, bone marrow gradually takes over haemopoiesis as the primary site of blood cell formation.
Step 5: Biological significance.
This shift ensures long-term blood production capability shifts to a stable skeletal system.
Step 6: Final conclusion.
Thus, spleen acts as a haemopoietic organ until the 5th month of gestation.
Haemopoiesis is the process of formation of blood cells. During embryonic development, different organs take part in blood formation at different stages.
Step 2: Early fetal development.
Initially, blood formation occurs in yolk sac. Later liver and spleen become important haemopoietic organs during mid-gestation.
Step 3: Role of spleen.
The spleen actively produces blood cells in early fetal life. It supports both RBC and WBC formation during this period.
Step 4: Transition of function.
After the 5th month of gestation, bone marrow gradually takes over haemopoiesis as the primary site of blood cell formation.
Step 5: Biological significance.
This shift ensures long-term blood production capability shifts to a stable skeletal system.
Step 6: Final conclusion.
Thus, spleen acts as a haemopoietic organ until the 5th month of gestation.
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