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BIOD 151 Module 3 Exam Questions with Correct Answers/ Portage Learning

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M3: Exam- Requires Respondus LockDown Browser Question 1 5 / 5 pts Explain why someone who has hypergastrinemia (excessive secretion of gastrin) might develop gastric/stomach ulcers. Your Answer: Gastrin stimulates the secretaion of pepsinogenes and HCL. If it is excess amounr that means it would be lead to erosion of the stomach. Gastrin stimulates the secretions of pepsinogens and hydrochloric acid. Excess amounts would lead to erosion of the stomach lining. Question 2 5 / 5 pts Explain in detail how the stomach contents enter the small intestine. Your Answer: There is the pyloric sphincter at thebase of stomach. Therefore, this valve relaxes causing a small quantity of chyme to pass the opening into the first part of small intestine. And then, this initiates a reflex. That is why the muscles of the sphincter to contrcat and close the openinf temporarily. After sphincter relaxes again and it allows more chyme to enter. The pyloric sphincter (valve), located at the base of the stomach, relaxes causing a small quantity of chyme to pass through the opening into the first part of the small intestine. This initiates a reflex that causes the muscles of the sphincter to contract and close the opening temporarily. Then the sphincter relaxes again and allows more chyme to enter. Question 3 10 / 10 pts Look carefully at the diagram below. Label the following 5 organs of the digestive system. To receive credit for the intestines you must label the specific region. 3: ___________ 4: ___________ 7: ___________ 9: ___________ 10: ___________ Your Answer: 3: Stomach 4: Gallbladder 7: Jejenum 9: Appendix 10: Rectum 3: Stomach 4: Gallbladder 7: Jejunum (not small intestine) 9: Appendix (not large intestine) 10: Rectum (not large intestine) Question 4 5 / 5 pts A patient is experiencing vitamin toxicity. What type of vitamin would be causing this toxicity? Explain your answer. A. Water soluble vitamin B. Fat soluble vitamin C. All of the above Your Answer: Fat soluble vitamin. These vitamins are stored within the body's fat stores making it harder for the body to rid itself of them. Therefore it can cause vitamin toxicity. B. Fat soluble vitamin. Fat soluble vitamins are stored within the body’s fat stores making it harder for the body to rid itself of them. Question 5 5 / 5 pts Explain which digestive system functions are carried out by the large intestine. Your Answer: Absorption: Water and electrolytes are reabsorbed and vitamins are absorbed. Defecation ; Feces goes to the rectum then excreted va anus. Absorption: In the large intestine water and electrolytes are reabsorbed and vitamins are absorbed. Defecation: Feces travel to the rectum where it is excreted via the anus.

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