Question
Which of the following statements about Sibson’s fascia is incorrect?
| A. |
Attached to the inner border of the 2nd rib
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| B. |
Covers apical part of lung
|
| C. |
Derived from prevertebral fascia
|
| D. |
Vessels pass above the fascia
|
Show Answer
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Correct Answer » A
Explanation
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|
Anatomy of Sibson’s Fascia
– Also called the suprapleural membrane.
– Extends from transverse process of C7 to inner border of 1st rib and costal cartilage.
– Derived from the prevertebral fascia layer of deep cervical fascia.
Function
– Covers and protects the lung apex and cervical pleura.
– Provides a tough barrier preventing lung herniation during increased pressure.
Relations
– Subclavian vessels and brachial plexus pass above the fascia.
– Important landmark in thoracic inlet anatomy and surgeries.
Clinical Relevance
– Injury can lead to apical pneumothorax.
– Important in interpreting neck and upper thoracic pathology on imaging.
