Intertransversarii

The intertransversarii muscles are deep back muscles that connect the transverse processes of adjacent cervical and lumbar vertebrae. They play a vital role in stabilising the vertebral column and facilitating lateral flexion.

The intertransversarii muscles contribute to lateral flexion of the vertebral column when activated unilaterally and help stabilise the column when activated bilaterally. This dual function is essential for maintaining posture and movement.

The intertransversarii muscles receive their nerve supply from the anterior rami of the spinal nerves. This innervation allows them to perform their functions effectively in the back.

These muscles originate from the transverse processes of the cervical and lumbar vertebrae and insert onto the transverse processes of the adjacent vertebrae. This arrangement facilitates their role in lateral flexion and stability.

The intertransversarii muscles in the cervical region are supplied by the occipital, deep cervical, and vertebral arteries, while those in the lumbar region receive blood from the dorsal branches of the lumbar arteries. This vascular supply is crucial for their function and health.