48.Which hormone results in contraction of gall bladder to release bile juice? A. GIP B. TSH C. CCK D. Secretin
Option C Fatty acids in the lumen of the duodenum stimulate endocrine cells to release the hormone cholecystokinin (CCK). CCK stimulates contractions in the smooth muscle of the gallbladder. CCK causes relaxation of the sphincter of Oddi, allowing bile release into the duodenum.