( Gastrin ( ( is ( ( a ( peptide hormone ) ) ( that ( ( ( ( stimulates ( secretion ( of ( ( gastric acid ) ( -LRB- ( HCl -RRB- ) ) ) ) ) ) ( by ( ( the ( parietal cells ) ) ( of ( the stomach ) ) ) ) ) and ) ( aids ( in ( gastric motility ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Gastrin)) (VP (VBZ is) (NP (NP (DT a) (JJ peptide) (NN hormone)) (SBAR (WHNP (WDT that)) (S (VP (VP (VBZ stimulates) (NP (NP (NN secretion)) (PP (IN of) (NP (NP (JJ gastric) (NN acid)) (PRN (-LRB- -LRB-) (NP (NNP HCl)) (-RRB- -RRB-))))) (PP (IN by) (NP (NP (DT the) (JJ parietal) (NNS cells)) (PP (IN of) (NP (DT the) (NN stomach)))))) (CC and) (VP (VBZ aids) (PP (IN in) (NP (JJ gastric) (NN motility))))))))) (. .)))
Gastrin is a peptide hormone that stimulates secretion of gastric acid (HCl) by the parietal cells of the stomach and aids in gastric motility.
(ROOT (S (NP (NNP Gastrin)) (VP (VBZ signals) (NP (NP (DT the) (NN secretion)) (PP (IN of) (NP (JJ gastric) (NN acid))))) (. .)))