EOG8SBHFN GO:0007218 1/31 neuropeptide signaling pathway biological_process "The series of molecular signals generated as a consequence of a peptide neurotransmitter binding to a cell surface receptor." [GOC:mah, ISBN:0815316194] EOG8SBHFN GO:0005184 1/31 neuropeptide hormone activity molecular_function "The action characteristic of a neuropeptide hormone, any peptide hormone that acts in the central nervous system. A neuropeptide is any of several types of molecules found in brain tissue, composed of short chains of amino acids; they include endorphins, enkephalins, vasopressin, and others. They are often localized in axon terminals at synapses and are classified as putative neurotransmitters, although some are also hormones." [GOC:mah] EOG8SBHFN GO:0045823 1/31 positive regulation of heart contraction biological_process "Any process that activates or increases the frequency, rate or extent of heart contraction." [GOC:go_curators] EOG8SBHFN GO:0005576 1/31 extracellular region cellular_component "The space external to the outermost structure of a cell. For cells without external protective or external encapsulating structures this refers to space outside of the plasma membrane. This term covers the host cell environment outside an intracellular parasite." [GOC:go_curators]