Which anatomical landmark corresponds to the junction of T2-3?

The anatomical landmark that corresponds to the junction of T2-3 is the sternal notch. This landmark is a prominent anatomical feature located at the superior aspect of the sternum and serves as a reference point in various clinical assessments.

The location of the sternal notch is significant in relation to the vertebral column; it is typically aligned with the level of the T2-3 intervertebral disc. This correspondence aids healthcare professionals in identifying thoracic spine levels during physical examination and procedures, as well as in the placement of certain medical devices or interventions.

The other options, while notable anatomical landmarks, do not align with the T2-3 junction. The spine of the scapula corresponds more closely to the level of T3-4, the xiphoid process aligns with T9-10, and the lower costal margin typically corresponds to T10-11. Therefore, the sternal notch serves as the correct anatomical reference point for the T2-3 junction.