What serves as a lever for muscle and ligaments projected laterally from the junction of the pedicle and lamina?

Transverse processes serve as levers for muscle and ligaments due to their anatomical position on the vertebrae. These processes extend laterally from the junction of the pedicle and lamina, providing attachment points for various muscles and ligaments. This structural configuration allows muscles to exert force effectively on the spine, aiding in movements such as rotation and lateral flexion.

In this context, transverse processes play a crucial role in the biomechanics of the vertebral column by offering a stable base for muscle attachment, which is essential for maintaining spinal stability and facilitating movement. Other structures in the options provided do not possess these specific lever characteristics in the same functional capacity.