560 Chapter Twenty-Five The Digestive System 13. Goblet cels are abundant in the

Question

560 Chapter Twenty-Five The Digestive System 13. Goblet cels are abundant in the epithelium of the large intesine in order to provide lubrication for the pessage of feces Exercise 2S.& Histology of the Liver 14. Label the parts of a hepate lotuie înstreo Portal triad ?Hepete lobules cortan continuous, sinusoidel) capiliaries, which receive both axygen-rich blood from branches (hepatic aterylhepatic portal veir) and nutrient-rich blood from branches of the of the hepatic annyhepatic potel ven. This biood is transported to the cortal vein. Exerciso 257: Histology of the Pancreas 16. The two substances thet are produced by the pancreas and released into the duodenum are bicarbonate/digestive enzymesi which is/are digestive enzymest which iware produced by acinar cells, and produced by cells that line the pancresse ducts 17. An exocine substance produced by (acinan'isiey cells in the pancreas includes amylasebicarbonate, which digests cerbohydrates. The endocrine part of the pancreas comists of acinarlislet cels that produce Exercise 25.8: Overview of the Gl Tract 19. Place be organs of the Gltract inthe correct order, hom proximal to distal b esophagus _ C, large mestre d. rectum - e. smal intestie t stomach

Explanation / Answer

13. goblet cells are abundant in the epithelium of the large intestine in order to provide lubrication for the passage of feces. True

Goblet cells secrete mucin which dissolves in water and forms mucus which acts as the lubricant in the passage of feces.

14. Labeling:

1) Hepatocyte 2) Central Vein 3) Bile canaliculi 4) Hepatic sinusoid 5) Hepatic lobule 6) Central vein 7) Bile canaliculi 8) Reticuloendothelial cell 9) Hepatic sinusoid 10) Hepatocyte 11) Branch of bile duct 12) Branch of hepatic portal vein 13) Branch of hepatic artery

15. Hepatic lobules contain sinusoidal capillaries, which receive both oxygen-rich blood from branches of the hepatic artery and nutrient-rich blood from the branches of the hepatic portal vein. The blood is transported to the central vein.

16. The two substances that are produced by the pancreas and released into the duodenum are digestive enzymes which is/are produced by acinar cells and bicarbonate which is/are produced by cells that line the pancreatic ducts.

17. An exocrine substance produced by acinar cells in the pancreas includes amylase which digests carbohydrates.

18. The endocrine part of the pancreas consists of Islet cells that produce hormones.

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