From which rib to which rib does the breast extend vertically?

The breast typically extends vertically from the second rib to the sixth rib. This range is consistent with anatomical studies, which reveal that the upper boundary of the breast is generally aligned with the second rib. The lower boundary extends to about the level of the sixth rib, accommodating the variability in breast anatomy among individuals.

Understanding these landmarks is crucial for mammography and breast imaging, as they help in identifying the proper anatomical positions for imaging and ensure optimal visualization of the breast tissue during examinations. The chosen answer accurately reflects the standard anatomical positioning of the breast, which is significant in clinical practice for diagnosis and treatment protocols.