Biology > EXAM > BIOD 121 M2 Exam. Questions And Answers. Portage Learning. Latest 2021/22 (All)

BIOD 121 M2 Exam. Questions And Answers. Portage Learning. Latest 2021/22

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BIOD 121 M2 Exam. Questions And Answers. Portage Learning. Latest 2021/22.Specific parts of the GI tract include the (A) , esophagus, stomach, the liver, (B) (C) , large i... ntestine and rectum. Other organs such as and pancreas aid in digestion but are not considered part of the GI tract. Your Answer: include the Mouth, esophagus, stomach, small intestine, large intestine and rectum. Other organs such as the liver, Gallbladder and pancrease aid in digestion but are not considered part of the GI tract A. mouth B. small intestine C. gallbladder Explain the cause of constipation. Your Answer: Constipation is when feces are hard, dry and infrequent, this is a result of sloe movement throught the large intestine. cause of constipation are poor diet, low-fiber, dehydration and certain medication Constipation is caused by hard dry stools related to a low fiber diet. 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. Your Answer: Esophagel Sphinter- valve/circular muscle located at the end of the esophagus and beginning of the stomach. This act as a gate keeper and prevents anything that has moved from the esophagus into the stomach , from coming back into the esophagus. This is important because the stomach is ver acidic and if any contents from the stomach goes back into the esophagus, the lining of the esophagus would be burnt due to the acid. ileocecal Sphinter- the valve/ circular muscle is located at the end of the small intestine and beginnning of the large intestine. This acts as a gate keeoer and prevents anything that is moved from the small intestine into the large intestine from coming back into the small intestine. This occurs to prevent any matter formed in the large intestine to go back into the small intestine and contaminate it. The esophageal sphincter prevents the contents of the stomach from reentering the esophagus. The pyloric sphincter controls the release of chyme into the small intestines from the stomach. The ileocecal sphincter prevents the contents of the large intestine from entering the small intestine. Define peristalsis. Is this an example of chemical or mechanical digestion? Your Answer: Peristalsis is a wave like muscle contraction that moves food to different processing station in the digestive system. it is both chemical and mechanical digestion [Show More]

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