Serotonin
Serotonin
PDGF
Thrombin.fibrin
No, the serotonin is collected and stored by platelets but not released by them. Serotonin is secreted by Enterochromaffin cells.
Indeed.
When mast cells and basophils degranulate, they release inflammatory mediators such as histamine, cytokines, and leukotrienes. This process plays a key role in triggering allergic reactions and promoting inflammation in response to allergens or pathogens. Symptoms may include itching, swelling, redness, and increased blood flow to the affected area.
Epinephrine is mainly a vasoconstrictor. It acts on alpha-adrenergic receptors in blood vessels, causing constriction and increasing blood pressure. However, it can also dilate blood vessels in certain tissues, like skeletal muscle, through its actions on beta-adrenergic receptors.
True
Neither--it is an anti-inflammatory, antipyretic and antiplatelet aggregator. In other words, it reduces inflammation, lowers fevers, keeps platelets from clumping together, and it also thins the blood.
vasoconstrictor
Yes it can.
The chemical released by blood platelets is called serotonin. This neurotransmitter helps regulate various physiological processes such as blood clotting, smooth muscle contraction, and mood.