The role of the spleen in mammals is ....... | vedclass

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(D) The spleen acts as a primary lymphoid organ and is involved in various functions in mammals. In the developing fetus (embryo),the spleen serves as

Vedclass · Accepted Answer

Acting as a blood-forming tissue in the embryo

Vedclass · Answer

(D) The spleen acts as a primary lymphoid organ and is involved in various functions in mammals. In the developing fetus (embryo),the spleen serves as a site for hematopoiesis,which is the production of blood cells. After birth,it primarily functions as a reservoir for blood and a site for the destruction of old red blood cells (erythrocytes). Therefore,the correct role mentioned among the options is that it acts as a blood-forming tissue in the embryo.

Column $I$	Column $II$ $\&$ $III$
$I$. Erythrocytes	$D$. Enucleated,biconcave circular in shape; $N$. Transport of gases $O_2$ and $CO_2$.
$II$. Neutrophils	$A$. Spherical large cells,nucleus with many lobes; $O$. Phagocytic in function.
$III$. Lymphocytes	$C$. Spherical nucleus,agranular cytoplasm; $M$. Humoral and cell-mediated immunity.
$IV$. Thrombocytes	$B$. Cellular fragments small,oval shaped; $L$. Clotting of blood.

The role of the spleen in mammals is $......$.

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