What Are Axillary Ribs

The axilla is a three dimensional pyramidal space which changes shape due to its location and arm movement. … The apex is also referred to as the axillary inlet. The borders of the apex are made by the lateral surface of the first rib, the posterior surface of the clavicle, and the superior margin of the scapula.

Which position best demonstrates the axillary ribs of the left rib cage?

The AP oblique rib projection is performed to best demonstrate the axillary ribs.

Where is the second intercostal space?

From the angle of Louis, move your fingers to the right and you will feel a gap between the ribs. This gap is the 2nd Intercostal space. From this position, run your fingers downward across the next rib, and the next one.