thrombocytin


ser·o·to·nin

(ser'ō-tō'nin), A vasoconstrictor, liberated by blood platelets, that inhibits gastric secretion and stimulates smooth muscle; present in relatively high concentrations in some areas of the central nervous system (hypothalamus, basal ganglia), and occurring in many peripheral tissues and cells and in carcinoid tumors. Synonym(s): 5-hydroxytryptamine, enteramine, thrombocytin, thrombotonin [sero- + G. tonos, tone, tension, + -in]

ser·o·to·nin

(ser'ŏ-tō'nin) A vasoconstrictor, liberated by platelets; inhibits gastric secretion and stimulates smooth muscle; also acts as a neurotransmitter; present in the central nervous system, many peripheral tissues and cells, and carcinoid tumors.
Synonym(s): 5-hydroxytryptamine.
[L. serum + G. tonos, tone, tension, + -in]