T cells of duodenum secretes -
(B) (CCK - PZ) (471 - Ganong 24th)Cholecystokin - 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 (Peptic/zymogen) cells secretes - Pepsinogen.High Yield PointsMouthSalivary gland secretesAmylase (tylin)Ebner's gland secretesLipase (lingual lipase)StomachParietal cells (oxyntic cells) secretesHCl and intrinsic factorsChief cells (zymogen or peptic cells) secretePepsinogenEnterochromaffin like cells (ECL) secreteHistamineD cells secreteSomatostatinG cells secreteGastrinSmall intestineBrunner's glands of duodenum secreteThick alkaline mucusGoblet cells in whole small intestineMucusPancreasExocrine part (Enzyme)Trypsin, chymotrypsin, clastase, lipase, colipase, carboxypeptidase A & B, a amylase, hydrolase, phospholipase A, ribonuclease, deoxyribonucleaseEndocrine part (hormones)A cells (a cells)GlucagonB cells (b cells)Insulin, amylinD cells (d cells)SomatostatinF cellsPancreatic polypeptide
Secretin
CCK-PZ
Gastrin
Intestinal peptide
G.I.T.