<prompt> T cells of duodenum secretes -SecretinCCK-PZGastrinIntestinal peptide  <response>: B CCK - PZ 471 - Ganong 24thCholecystokin - Pancreozymin CCK - PZ Site of secretion -T cells of duodenum and Jejunum Stimulated by -I. Small peptides and amino acids.II. Fatty acidsIII. Monoglycerides Major action -1. Stimulates contraction of gall bladder and relaxes sphincter of oddi - Bile secretion.2. Increase pancreatic enzymes and HCO3- secretion.3. Increase growth of exocrine pancreas.4. Inhibits gastric emptying. G - cells of gastric antrum secretes-GASTRIN S - cells of duodenum secretes-SECRETIN Enterochromaffin and MO cells in the stomach, small intestine and colon.-MOTILIN Ghrelin: Secreted by the stomach and hypothalamus. Involves in control of food intake as its secretions, increased by fasting and decreased after ingestion. Also stimulates growth hormone secretion by acting directly or receptors in the pituitary. Parietal Oxyntic cells secretes - HCI, Intrinsic factor Chief Pepticzymogen cells secretes - Pepsinogen.High Yield PointsMouthSalivary gland secretesAmylase tylinEbners gland secretesLipase lingual lipaseStomachParietal cells oxyntic cells secretesHCl and intrinsic factorsChief cells zymogen or peptic cells secretePepsinogenEnterochromaffin like cells ECL secreteHistamineD cells secreteSomatostatinG cells secreteGastrinSmall intestineBrunners glands of duodenum secreteThick alkaline mucusGoblet cells in whole small intestineMucusPancreasExocrine part EnzymeTrypsin, chymotrypsin, clastase, lipase, colipase, carboxypeptidase A B, a amylase, hydrolase, phospholipase A, ribonuclease, deoxyribonucleaseEndocrine part hormonesA cells a cellsGlucagonB cells b cellsInsulin, amylinD cells d cellsSomatostatinF cellsPancreatic polypeptide 