Question

3. In the lecture on the circulatory system, you learned about how electrical impulses help maintain the rhythmic best of a human heart. Explain clearly in no more than three sentences) why a delay in electrical implies at the trioventricular mode is very important for proper hent function. (marks in total) 4. A list of four enzymes that you learned about in lecture are found below. Which of the following enzymes would most likely be found in the copy of a patient suffering from gastroesophageal reflux disease? Make sure you explain why you chose the enzyme as the answer to the question. HINT-Think about which digestive organs apply to the word gastroesophageal. Also, for those who do not know what reflux mems, it refers to the movement of fluid in the opposite direction marks total) NOTE-Even though this question is worth 2 marks, this does not automatically mean that two anwwers we correct, it could mean that only I wer is correct er mere than two wwers are correct. This list of four entrymes are: PEPSIN, TRYPSIN, CHYMOTRYPSIN and CARBOXYPEPTIDASE

Answer 1

3. This delay is of 0.9 seconds. It is very important because it ensures that atria have ejected all the blood to ventricles first before ventricles contract.

4. Pepsin is the enzyme increased during esophageal reflux disease leading to oesophageal mucosal injury. This is an acid reflex leads to heat burn. But the pepsin can be neutralized by alkaline water. It is a chronic dosease happens when stomach acid or bile flows into food pope and leads to burning. If this happen twice a week leads to GERD means gastroesophageal reflux disease

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