Patho 370 Test 2:DB

 Question 1 0.125 out of 0.125 points Which vessel normally demonstrates the most rapid blood flow? Selected Answer: c. The vena cava Correct Answer: c. The vena cava Response Feedback: The vena cava has the most rapid rate of flow. Arterioles don’t offer the most rapid blood flow. Capillaries are composed of a single thickness of endothelial cells attached to a protein network called the basement membrane and don’t offer the most rapid blood flow. A venule begins where the arteriole ends and doesn’t offer the most rapid blood flow.  Question 2 0.125 out of 0.125 points Pernicious anemia is caused by a lack of Selected Answer: b. intrinsic factor. Correct Answer: b. intrinsic factor. Response Feedback: The fundamental defect causing pernicious anemia is the lack of intrinsic factor. Without it, vitamin B12 cannot be absorbed. Iron deficiency does not lead to pernicious anemia. Rather, it is the most common cause of anemia and is the result of unavailability of iron for hemoglobin synthesis. Pernicious anemia and folate deficiency are similar in etiology. Both are caused by a disruption in DNA synthesis of blast cells in bone marrow. Erythropoietin is necessary for the production of red cells.  Question 3 0.125 out of 0.125 points Two of the most serious oncology emergencies associated with non-Hodgkin lymphoma are obstruction of the superior vena cava and compression of the spinal cord.