Most axillary lymph nodes lie between pectoralis major and latissimus dorsi.

• A. Cannot determine
• B. False
• C. True
• D. Not applicable

Answer: (C)

In the axilla, the walls are formed anteriorly by pectoralis major and posteriorly by latissimus dorsi (with nearby teres major). The lymph nodes are clustered in the fatty tissue around the axillary vessels and are distributed in groups that lie within this space, including anterior (pectoral), posterior (subscapular), lateral, central, and apical nodes. Because these nodal groups sit between the anterior and posterior walls, most axillary lymph nodes are indeed located between pectoralis major and latissimus dorsi. Some nodes may be described in relation to other nearby structures, but the bulk of the axillary nodes occupy that space.