Chapter 4: Cardiovascular System Test Bank MULTIPLE CHOICE 1. The innermost tissue layer of the heart is the: a. epicardium. b. myocardium. c. pericardium. d. endocardium. ANS: D
REF: p. 99
2. Oxygenated blood is returned to the heart via the: a. pulmonary arteries. b. superior vena cavae. c. pulmonary veins. d. aorta. ANS: C
REF: p. 99
3. The mitral valve is also known as the _____ valve. a. bicuspid b. semilunar c. aortic d. tricuspid ANS: A
REF: p. 119
4. What is the name of the internal tubular structure of a blood vessel? a. Intima b. Lumen c. Adventitia d. Endocardium ANS: B
REF: p. 100
5. How many posterior ribs should be visible on a chest radiograph? a. 6 b. 8 c. 10 d. 12 ANS: C
REF: p. 101
6. An enlarged heart is known as: a. ischemia. b. cor pulmonale. c. cardiomegaly. d. tetralogy of Fallot. ANS: C
REF: p. 102
