3.13 Which of the following statements does not correctly describe the pericardium? a. The oblique sinus is bounded by the pulmonary veins and the pulmonary arteries. b. The transverse sinus lies between the superior vena cava and left atrium posteriorly, and the arch of aorta and pulmonary trunk anteriorly. c. It contains the entire ascending aorta. d. It is attached to the central tendon of the diaphragm. e. The phrenic nerves are directly related to its lateral surface on both sides. 3.14 Which of these statements does not correctly describe the phrenic nerve? a. It innervates the mediastinal pleura. b. It innervates the diaphragm from its superior surface downwards. c. It passes anterior to the hilum of the lung on the left. d. It lies lateral to the superior vena cava on the right. e. It has the subclavian artery on its medial side on the left.
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THORAX: QUESTIONS
3.12 Which statement regarding the superior vena cava is correct? a. It is formed by the union of the right and left subclavian veins. b. The azygos vein drains into its posterior aspect. c. It drains blood from all structures superior to the diaphragm. d. It forms the posterior boundary of the oblique pericardial sinus. e. Has a rudimentary valve at its opening into the right atrium.