1. What is the sternal angle of Louis, and why is it important?
2. What is primary site for lymphatic drainage from the breast?
3. Which breast quadrant has the greatest occurrence of cancer, and what type of breast cancer is most common?
4. Which intercostal muscles are most important for inspiration?
5. Which layer of pleura intimately invests the lung?
6. What is the inferior extent of the lung and parietal pleura in quiet respiration at the midaxillary line?
7. Of the structures entering or leaving the lung at the hilum, where do the pulmonary veins usually lie in relation to the other hilar structures?
8. What is thoracic outlet syndrome?
9. Why do most lung abscesses occur in the right lung?
10. What types of nerve fibers travel in the thoracic cardiac nerves?
11. Which coronary artery supplies the SA node?
12. Why is angina pectoris an example of referred pain?
13. What are the semilunar valves?
14. Trace the conduction pathway through the heart.
15. What veins drain the posterior thoracic wall?
16. Why is the azygos system of veins important clinically?
17. What structure in the embryonic foregut region gives rise to the lung buds?
18. What does the fourth pair of aortic arches become in the adult?
19. What is the most common congenital heart defect?
20. What are the hallmarks of tetralogy of Fallot?
