Ligament
Suprapleural membrane
Fascial reinforcement over the cervical pleura
High-yield
Its usual attachments include the transverse process of C7 and the inner edge of the first rib. The small, variable scalenus minimus can reinforce it.
Overview
The suprapleural membrane strengthens the dome of pleura at the thoracic inlet. It spans from the lower cervical vertebral region to the first rib and blends with neighboring fascia.
Reference facts
- Attachments
- C7 transverse process to the inner first-rib and costal-cartilage region, blending with endothoracic fascia
- Function
- Supports the cervical pleural dome and limits excessive apical displacement
- Clinical point
- Lower-neck injury or intervention can breach the nearby pleura and admit air to the pleural space
Clinical correlation
The lung apex and cervical pleura lie near structures approached in lower-neck procedures. Pleural injury in this region can produce pneumothorax.
Frequently asked questions
Where does the suprapleural membrane attach?
The suprapleural membrane attaches C7 transverse process to the inner first-rib and costal-cartilage region, blending with endothoracic fascia.
What does the suprapleural membrane do?
Supports the cervical pleural dome and limits excessive apical displacement.
Why does the suprapleural membrane matter clinically?
Lower-neck injury or intervention can breach the nearby pleura and admit air to the pleural space.