Digestive System Questions

The Digestive System: Anatomy Review 1. List two main divisions of the digestive system. a. _____________________ b. _____________________ 2. The four main layers of the digestive tract wall are a.___________.

b. ___________. c. ___________. d. ___________.

3. Label the diagram below with the four main layers you listed in question 6.

4. The mucosa includes a type of columnar________that forms the inner lining of the lumen 5. Blood and lymph vessels of the mucosa are found in its ______ 6. The smooth muscle layer of the mucosa is called the ________ 7. The function of epithelialgoblet cells is to secrete ________. 8. _________ cells of the mucosa secrete hormones into the blood. 9. Absorption of nutrients occurs through the mucosal epithelium and into either _______ or ______vessels. _______ connective tissue layer. _______.

10. Label the vessels you listed in question 13 in the diagram below.

11. The muscularis mucosa has both ________ and _______ fibers thatfunction in moving the villi to aid in digestion and absorption. 12. The built-in (intrinsic) network of nerve cells in the submucosa is the ______ ______. 13. The two types of movements produced bycontractions of the muscularis externa are ____________ and ____________. 14. The network of neurons in between the two muscle layers of the muscularis externa is the ___________ ___________. 15. Themouth, with its ____ ____ epithelium, is involved in both chemical and ____ digestion.

16. List the four regions of the stomach: a. __________ b. __________ c. __________ d. __________ 17. List thethree sheets of muscle in the stomach’s muscularis externa: a. ____________ b. ____________ c. ____________ 18. Label the three sheets of muscle in the stomach’s muscularis externa in the diagram below.19. List, in order from the pylorus to the colon, the three regions of the small intestine: a. ____________ b. ____________ c. ____________ 20. From largest to smallest, list the three...