Mediastinal structures, lung and pleural anatomy, and thoracic vasculature relationships tested on USMLE Step 1.
40 cards · basic cards · AI-written, checked twice. Edit anything.
- What anatomical landmark marks the boundary between the superior and inferior mediastinum?
- The sternal angle (angle of Louis), at the T4/T5 disc level
- What are the three subdivisions of the inferior mediastinum?
- Anterior, middle, and posterior mediastinum
- Which mediastinal compartment contains the heart and pericardium?
- Middle mediastinum
- Which mediastinal compartment contains the thymus?
- Anterior mediastinum
- Which mediastinal compartment contains the esophagus?
- Posterior mediastinum
- Which mediastinal compartment contains the descending thoracic aorta?
- Posterior mediastinum
- Which mediastinal compartment contains the arch of the aorta?
- Superior mediastinum
- The trachea bifurcates into the right and left main bronchi at vertebral level ____.
- T4/T5
- How many lobes does the right lung have?
- Three (upper, middle, lower)
- How many lobes does the left lung have?
- Two (upper and lower)
- What fissure separates the upper and middle lobes of the right lung?
- The horizontal (minor) fissure
- What fissure separates the lower lobe from the upper lobe in both lungs?
- The oblique (major) fissure
- What is the name of the indentation on the anterior border of the left lung made by the heart?
- Cardiac notch
- Why does an aspirated foreign body most often lodge in the right main bronchus?
- It is wider, shorter, and more vertical than the left main bronchus
- At the lung hilum, what is the anterior-to-posterior order of structures?
- Vein, artery, bronchus