Regarding the sphincter of Oddi, which of the following is NOT correct: the sphi
ID: 69159 • Letter: R
Question
Regarding the sphincter of Oddi, which of the following is NOT correct: the sphincter regulates delivery of bile into the duodenum the sphincter regulates delivery of pancreatic enzymes into the duodenum the sphincter contains smooth muscle cells The hormone CCK increases acting myosin-based contraction of the sphincter the contractile cells of the sphincter are derived from mesoderm The figure below is an H&E-stained; section of a portal tract within the liver. Which numbered structure represents a bile duct: Which of the following is LEAST prominent on/in hepatocytes. mitochondria rough endoplasmic reticulum smooth endoplasmic reticulum cilia small electron dense granules that are larger than ribosomes.Explanation / Answer
10.
The sphincter of Oddi is muscular valve that controls the secretion of bile and pancreatic juices into duodenum. The hormone cholecystokinin (CCK) causes relaxation in sphincter of Oddi through vasoactive intestinal peptide. Hence, Option 4 is correct.
11.
The portal tract contains portal triad comprising of portal duct, bile duct and branch of hepatic artery. The part given as number 2 represents bile duct. Hence, option 2 is correct.
12.
Cilia are the least prominent structures in / on hepatocytes. The hepatocytes are eosinophilic with numerous mitochondria and basophilic with rough endoplasmic reticulum, free ribosomes and glycogen and fat granules. Hence, option 4 is correct.