Skip to Main Content

Chapter 4: Functional Anatomy of the Heart

Which of the following statements is false?

A. The main pulmonary artery, portions of both venae cavae, distal pulmonary veins, and nearly the entire ascending aorta are intrapericardial

B. The right and left pulmonary arteries are extrapericardial structures

C. The transverse sinus forms a tunnel-like passageway that separates the great arteries anteriorly from the great veins posteriorly

D. The oblique sinus lies posterior to the right atrium

E. The serous pericardium forms the inner lining of the fibrous pericardium; over the heart, it is referred to as the epicardium

The answer is D. (Hurst’s The Heart, 14th Edition, Chap. 4). The reflections along the pulmonary veins and venae cavae are continuous and form a posterior midline cul-de-sac known as the oblique sinus. The oblique sinus lies immediately posterior to the left atrium, not the right atrium (option D). The main pulmonary artery, portions of both venae cavae, distal pulmonary veins, and nearly the entire ascending aorta are intrapericardial (option A). The right and left pulmonary arteries are extrapericardial structures (option B). The transverse sinus forms a tunnel-like passageway that separates the great arteries anteriorly from the great veins posteriorly (option C). The serous pericardium forms the delicate inner lining of the fibrous pericardium and continues onto the surface of the heart and great vessels at the pericardial reflection.1 Over the heart, it is referred to as the epicardium, and it contains the epicardial coronary arteries and veins, autonomic nerves, lymphatics, and a variable amount of adipose tissue (option E).

A 35-year-old woman presents to your clinic for evaluation of a murmur. She describes intermittent regular palpitations that have been associated with lightheadedness. Auscultation reveals a midsystolic click and a crescendo systolic murmur. The S1-click distance increases with squatting and decreases with standing. Regarding this valve or valve defect, which statement is true?

A. The valve leaflets are characteristically thin

B. Annular dilatation is not typically present

C. Prolapse of the anterior leaflet occurs more frequently

D. The anterolateral papillary muscle is commonly single and usually has a dual blood supply from the left coronary circulation

E. The posteromedial papillary muscle usually has a single head and is most commonly supplied by the left anterior descending artery

The answer is D. (Hurst’s The Heart, 14th Edition, Chap. 4). The anterolateral papillary muscle is single and usually has a dual blood supply ...

Pop-up div Successfully Displayed

This div only appears when the trigger link is hovered over. Otherwise it is hidden from view.