Week 5

1. The interval between thoracic vertebrae 4 and 5 is a landmark for:

A. entry of the azygos vein into the superior vena cava

B. ligamentum arteriosum

C. bifurcation of the trachea

D. two of obove

E. all of the above

2. Aspiration pneumonia, an infection which may occur following the lodging of a foreign body in a small branch of the bronchial tree, is most likely to occur in the:

A. right upper lobe of the lung

B. right middle lobe

C. right lower lobe

D. left upper lobe

E. left lower lobe

3. Because of its origin in the neck/throat region, the diaphragm in the adult receives its motor innervation from:

A. cervical spinal cord levels

B. the vagus

C. thoracic intercostal nerves

D. the sympathetic trunks

E. the greater splanchnic nerve