Trunk (thorax, abdomen, back)

Levatores Costarum Longi (Long Costal Levators)

Musculi levatores costarum longi

Origin

Transverse process of T7-T10

Insertion

The rib two levels below (skipping the next rib)

Function

Elevation of the ribs; assists inspiration and rotation of the thoracic spine

Innervation

Dorsal rami of the thoracic spinal nerves

Movement & chain

Occur only in the lower thoracic segments alongside the short costal levators and provide a slightly greater leverage on the ribs there.

Palpation

Spans across two rib levels in the lower thoracic cage; deep beneath erector spinae and rhomboids.

Clinical

Accessory inspiratory muscles during heavy ventilation; subject to spasm in costovertebral subluxations.

Segmental innervation

Dorsal rami T7-T10.

In clinical practice

Skin and pressure point inspection; maintain comfortable positioning and proper body mechanics during patient handling and daily care.

Region in the model

Trunk (thorax, abdomen, back)