Anterior Neck

Question 1

what are the boundaries of the anterior neck?

Answer 1

sternocleidomastoid
border of the mandible
midline of neck
jugular notch

Question 2

what cranial nerve inervates the platysma?

Answer 2

facial nerve CN VII

Question 3

what vertebral level is the hyoid bone?

Answer 3

C3

Question 4

what vertebral level is the superior thyroid notch ?

Answer 4

C4

Question 5

what vertebral level is the cricoid cartilage?

Answer 5

C6

Question 6

muscles and viscera of the neck are enclosed within three sheets of deep fascia which are?

Answer 6

investing, prevertebral and visceral

Question 7

the viseral fascia can be divided into what?

Answer 7

pretracheal and buccopharyngeal

Question 8

what forms the carotid sheath?

Answer 8

contributions from all three fasciae

Question 9

what could the retropharyngeal space lead too?

Answer 9

potential highway for an infection to spread from head down into the mediastinum

Question 10

the cutaneous branches of the cervical plexus innervate which dermatomes?

Answer 10

C2 C3 and C4

Question 11

what spinal nerves make up the greater auricular nerve? transverse cervical? supraclavicular?

Answer 11

C2 C3
C2 C3
C3 C4

Question 12

what are the sensory branches of the trigeminal nerve?

Answer 12

ophthalmic nerve (V1)
maxillary nerve (V2)
mandibular nerve (V3)

Question 13

what are the infrahyoid (strap) muscles?

Answer 13

• thyrohyoid
• sternothyroid
• omohyoid
• sternohyoid

Question 14

what is the ansa cervicalis?

Answer 14

a loop formed from C1-C3 ventral rami of the cervical plexus that provides motor innervation to the anterior neck of the strap muscles

Question 15

what are the branches of the common carotid artery?

Answer 15

• internal carotid
• external carotid (facial, lingual, occipital, superior thyroid and superior laryngeal branches)

Question 16

what branches come off the subclavian artery?

Answer 16

• thyrocervical trunk (inferior thyroid,
  transverse cervical, suprascapular)
• vertebral artery
• costocervical trunk
• internal thoracic

Question 17

what connects the two lobes of the thyroid gland?

Answer 17

isthmus

Question 18

what is thyroidectomy and what is a complication that may occur?

Answer 18

• removal of all or part of the thyroid gland
• accidental damaging of the recurrent laryngeal nerve when clamping the inferior thyroid artery

Question 19

what is the path of lymphatic drainage for the head and neck?

Answer 19

-superior deep cervical nodes drain to the inferior deep cervical nodes and then to the thoracic duct

Question 20

what CN is the superior laryngeal nerve a branch of?

Answer 20

vagus