Description
Small cardioactive peptide A (SCPA) is a peptide co-transmitter intrinsic to motor neurons that controls feeding behavior and muscle movement in molluscs such as species of Lymnea, Aplysia, and Clione. SCPA acts at the neuromuscular synapse, increasing cAMP; here, this peptide facilitates connection between cholinergic inhibitory neurons and sensory neurons. SCPA also controls feeding behavior, increasing feeding arousal.