NU 621 Week 1 Post-Class Exam 1 GRADED A+

NU 621 Week 1 Post-Class Exam Questions with Answers 1.11 Time taken Grade 36.00 out of a maximum of 36.00 (100%) Q 2 Question 2 The following three questions pertain to Case Study 1.A: Myocardial Infarction. Chest pain is caused by the build-up of the following substance that is formed under anaerobic respiration: Select one: a. Oxygen b. Lactic acid c. Glucose d. Carbon dioxide Feedback The correct answer is: Lactic acid. Q 3 Question 3 Blood samples contain a variety of substances that have leaked from dead and dying cardiomyocytes, including: Select one: a. Troponin 1 b. CK-MB c. Myoglobin d. All of the above Feedback The correct answer is: All of the above. Q 4 Question 4 A “cardiac panel” helps in the diagnosis of a myocardial infarction and the timing and relative levels of various substances that make up the “cardiac panel” indicate the severity and duration of an MI. Select one: True False Feedback The correct answer is: True. Q 5 Question 5 The following three questions pertain to Case 1.B: Reperfusion Injury. Reperfusion injury is caused by the formation of: Select one: a. Reactive oxygen species b. Oxygen c. Lactic acid d. Calcium Feedback The correct answer is: Reactive oxygen species. Q 6 Question 6 Reperfusion injury involves which of the following processes: Select one: a. Host inflammatory responses b. Oxygen free radicals attack cellular lipids and proteins c. Damage to cell membranes that may release more free radicals d. Any of the above processes may occur during reperfusion injury Feedback The correct answer is: Any of the above processes may occur during reperfusion injury. Q 7 Question 7 Chronic ulcerative processes have been attributed to reperfusion injury as a consequence of alternating occlusion of blood flow then return of blood flow that sets off both inflammatory and oxidative stress responses that can cause tissue damage. Select one: True False Feedback The correct answer is: True. Q 8 Question 8 The following three questions pertain to Case 1.C: Myocardial Hypertrophy. The most important change related to atheroscerosis that contributes to hypertension would be a(n): Select one: a. Decreased radius of the blood vessel b. Decreased viscosity of the blood c. Increased length of the blood vessel d. Increased radius of the blood vessel Feedback The correct answer is: Decreased radius of the blood vessel. Q 9 Question 9 The heart undergoes which type of adaptation in response to hypertension: Select one: a. Atrophy b. Hypertrophy c. Hyperplasia d. Metaplasia Feedback The correct answer is: Hypertrophy. Q 10 Question 10 Although adaptation can help strengthen the heart initially to help overcome “afterload”, eventually if hypertension continues there may be an excess demand on the heart muscle to contract that cannot be met by the available blood supply, causing the heart to fail. Select one: True False Feedback The correct answer is: True. Q 1 Question 11 The following three questions pertain to Case 1.D: Gangrene. Infection with Clostridium perf