Question

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

Options

• I and III only

• II and IV only

• III and V only

• I and IV only

Answer 1

I and III only

Explanation:

Basophils secrete serotonin along with histamine and heparin as part of inflammatory reactions.
Thrombocytes (platelets) store large amounts of serotonin in their granules and release it when activated during clotting.