PORTAGE LEARNING BIOD 121 Nutrition Exam 2 Questions and Answers Completed Graded A+

Specific parts of the GI tract include the mouth, esophagus, ______(A)________, small intestine, _______(B)_________ and ______(C)_________. Other organs such as the liver, gallbladder and pancreas aid in digestion but are not considered part of the GI tract -Answer stomach large intestine rectum Explain the cause and symptoms of heartburn -Answer cause: weakened cardiac sphincter allows stomach acid to enter esophagus symptoms: burning sensation in the esophagus which can cause coughing, gagging, horseness Sphincters play an important role in the GI tract. Name two sphincters discussed in the module and using your own words, briefly describe their functions -Answer pyloric sphincter: controls release of chyme into small intestine ileocecal sphincter: connects small intestine to large intestine, prevents contents of large intestine from reentering small intestine