All are true about Sibson's fascia EXCEPT: (A) Attached to inner border of first rib, (B) Covers supraclavicular pa of lung, (C) Modified inner pa of scalenus anterior, (D) Attached to transverse process of C7
Answer is C. Sibson's fascia is a modification of the endothoracic fascia in the supraclavicular region, covering the thoracic inlet. It is a degenerated tendon of scalenus minimus. Attachment : Transverse process of C7 veebra and inner border of 1st rib. It separates the subclan aery and vein ( running on the posterio superior surface of the first rib) from the cervical pleura.