Head and Neck

Question 1

Level Ia

Answer 1

Submental nodes
Drains:
- chin
- mid-lower lip
- anterior tip of tongue
- floor of mouth

Question 2

Level Ib

Answer 2

Submandibular nodes
Drains:
- lower nasal cavity
- hard/soft palate
- skin & mucosa of cheek
- anterior tongue
- upper and lower lips
- floor of mouth

Question 3

Level II

Answer 3

Upper deep cervical nodes
Drains:
- lymphatics of the facial nodes, levels Ia and Ib
- nasal cavity
- pharyngeal space
- larynx
- external auditory canal 
- middle ear
- sublingual and submandibular glands

Question 4

Level III

Answer 4

Middle deep cervical nodes
Drains:
- lymphatics of level II and level V
- base of tongue
- tonsils
- larynx
- hypopharynx 
- thyroid

Question 5

Level IV

Answer 5

Supraclavicular chain
Drains:
- lymphatics of level III and level V
- larynx
- hypopharynx
- thyroid gland 
- superior esophagus

Question 6

Level V

Answer 6

Posterior cervical chain
Drains:
- lymphatics of the occipital, retroauricular & parietal scalp nodes
- skin of the posterior neck and shoulder
- nasopharynx
- oropharynx
- thyroid gland