Substance P

**Definition:** An eleven-amino acid neurotransmitter that appears in both the central and peripheral nervous systems. It is involved in transmission of PAIN, causes rapid contractions of the gastrointestinal smooth muscle, and modulates inflammatory and immune responses.

**Tree numbers:** - D12.644.276.812.900.866 - D12.644.400.800.750 - D12.644.456.800.866 - D12.776.467.812.900.866 - D12.776.631.650.800.750 - D23.469.050.375.850.890 - D23.529.812.900.866

**Synonyms:** - Euler-Gaddum Substance P - SP(1-11)