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| Q. |
Regarding fascia and sheaths in the neck: |
| A. | the pretracheal fascia contains both trachea and oesophagus, and also splits to envelop the lobes of the thyroid gland |
| B. | the prevertebral fascia encloses vertebrae and muscles acting on the vertebrae, but does not contribute to the investment over the brachial plexus as it passes between scalene muscles |
| C. | the investing fascia encloses trapezius sternomastoid and platysma muscles |
| D. | the structures contained within the carotid sheath include carotid artery, sympathetic chain and jugular vein, but not phrenic nerve or vagus |
| E. | infection may track in the pretracheal space to mediastinum |
| Answer» A. the pretracheal fascia contains both trachea and oesophagus, and also splits to envelop the lobes of the thyroid gland | |
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