About: http://webisa.webdatacommons.org/239247858

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Under the epithelium is a layer of connective tissue, followed by a muscular wall that contracts in response to cholecystokinin, or CCK, a peptide hormone secreted by the duodenum.
http://www.w3.org/ns/prov#wasQuotedFrom	newworldencyclopedia.org