Which of the following blood corpuscles secre | vedclass

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(A) Serotonin is a chemical messenger that acts as a vasoconstrictor.In the human body,serotonin is secreted by:$1$. Basophils: These are granulocytes

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$I$ and $III$ only

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(A) Serotonin is a chemical messenger that acts as a vasoconstrictor.In the human body,serotonin is secreted by:$1$. Basophils: These are granulocytes that release histamine,heparin,and serotonin during inflammatory responses.$2$. Thrombocytes (Blood Platelets): These cell fragments release serotonin to help in the process of blood clotting (hemostasis) by constricting blood vessels at the site of injury.Therefore,both Basophils $(I)$ and Thrombocytes $(III)$ are responsible for the secretion of serotonin.The correct option is $A$.

Which of the following blood corpuscles secrete serotonin?
$I$. Basophils $\quad$ $II$. Eosinophils
$III$. Thrombocytes $\quad$ $IV$. Lymphocytes
$V$. Monocytes
Select the correct option from the following:

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Which of the following blood corpuscles secrete serotonin?$I$. Basophils $\quad$ $II$. Eosinophils$III$. Thrombocytes $\quad$ $IV$. Lymphocytes$V$. MonocytesSelect the correct option from the following: