The platysma is innervated by
A. Cervical branch of facial nerve
B. Lesser occipital nerve
C. Great auricular nerve
D. Transverse nerve of neck
E. Supraclavicular nerve
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The structure superficial to the sternocleidomastoid is
A. External jugular vein
B. Carotid sheath
C. Sympathetic trunk in the neck
D. Common carotid artery
E. Ansa cervicalis(颈襻)
The space lies between pretracheal layer and cervical part of trachea is
A. Superastenal space
B. Pretracheal space
C. Parapharyngeal space
D. Prevertebral space
E. Retropharyngeal space(咽后间隙)
The muscle forms the border both carotid triangle and submandibular triangle is
A. Stylohyoid
B. Digastric
C. Geniohyoid
D. Omohyoid
E. Mylohyoid
One of the motor components of the cervical plexus, the ansa cervicalis, innervates all of the following muscles except the
A. Omohyoid
B. Sternohyoid
C. Sternothyroid
D. Thyrohyoid
E. None of above.
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