Regarding fascia and sheaths in the neck:
the pretracheal fascia contains both trachea and oesophagus, and also splits to envelop the lobes of the
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
the investing fascia encloses trapezius sternomastoid and platysma muscles
the structures contained within the carotid sheath include carotid artery, sympathetic chain and jugular
vein, but not phrenic nerve or vagus
infection may track in the pretracheal space to mediastinum
For sternocleidomastoid, which is TRUE?
contraction of one muscle rotates the head to the ipsilateral shoulder
it is crossed superficially by the external jugular vein
it is supplied by the transverse cervical nerve
its clavicular fibres mainly insert into the superior nucal line
it is superficial to the deep cervical fascia
Which is not considered a content of the posterior triangle of the neck?
trunks of the brachial plexus
internal jugular vein
branches of the cervical plexus
For the thyroid, which is TRUE?
the thyroid isthmus crosses the thyroid cartilage
the superior thyroid arteries are branches off the internal carotid arteries
the posterior surface lies on the carotid sheaths
the inferior thyroid arteries are branches off the external carotid arteries
the recurrent laryngeal nerves pass anteriorly to each lateral lobe
For the great neck vessels, which is TRUE?
the carotid sheath contains the ansor cervicalis, vagus and recurrent laryngeal nerves
the external carotid artery has three branches
the internal carotid artery has six branches
the internal jugular vein lies lateral to the carotid artery throughout its course
the carotid sinus lies at the commencement of the common carotid artery
Head and Neck Anatomy – Answers