KnowraPeptide hormoneLinked fromLinked fromThe 12 pages that link to Peptide hormone, each with the reason it gives.All 12Broader topic 3Related 3Narrower topic 4Compared with 2OxytocinRelated: Oxytocin’s peptide structure prevents it from freely crossing cell membranes.EndorphinsRelated: Some endorphins also function as hormones when released into the bloodstream.Neurosecretory systemsRelated: Many neurosecretory products are peptide hormones packaged for regulated release.