Which of the following formed elements releases serotonin? Serotonin is a neurotransmitter produced by platelets. All formed elements include red blood cells, platelets and neutrophils. The brain contains about 20 000 serotonergic neurons, which have elongated and branched structures. Blood has two types of erythrocytes: monocytic and erythrocytic.
The most common type of blood cell, erythrocytes, contain about four-fifth of all cells in a microliter of blood. They release serotonin during hemostasis, making platelets less sticky. Biliverdin is the main component of bile and both are found in normal white blood cells. The midbrain is home to serotonin-releasing neurons, which cluster in small clusters.
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