NR 507 FINAL EXAM QUESTIONS AND ANSWERS

Which hormone prompts increased anxiety, vigilance, and arousal during a stress response? Correct! 3339 Norepinephrine Norepinephrine Only the release of norepinephrine promotes arousal, increased vigilance, increased anxiety, and other protective emotional responses. Question 2 2 / 2 pts Idiopathic thrombocytopenic purpura (ITP) is an autoimmune process involving antibodies attacking which type of cells? Platelets ITP is a disorder of platelet consumption. This selection is the only option that correctly identifies which type of cell is attacked by ITP. Question 3 When renin is released, it is capable of which action? Formation of angiotensin I Formation of angiotensin I When renin is released, it cleaves an α-globulin (angiotensinogen produced by liver hepatocytes) in the plasma to form angiotensin I. Question 4 Which of the following are formed elements of the blood that are not cells but are disk-shaped cytoplasmic fragments essential for blood clotting? Platelets Platelets Platelets (thrombocytes) are not true cells but are disk-shaped cytoplasmic fragments that are essential for blood coagulation and control of bleeding. This description is not accurate for any of the other options. . Question 5 In a full-term infant, the normal erythrocyte life span is days, whereas the adult erythrocyte life span is days. 60 to 80; 120 In full-term infants, normal erythrocyte life span is 60 to 80 days; in premature infants it may be as short as 20 to 30 days; and in children and adolescents, it is 120 days, the same as that in adults.