Superior deep nodes
~ adjacent to internal jugular; drains max 3rd molars, post hard palate,
soft palate, base of tongue; empties into inferior deep cervical
inferior deep nodes
~ deep to SCM; drains most lymph from head; communicates with
axillary lymph which can cause breast cancer; em...
✓~ zygo major and minor, orbicularis oris, levator labii superioris, levator
anguli oris, risorius
origin
✓~ the bone where the muscle connects; less moveable
insertion
✓~ where the muscles attaches, tends to be moved by the contraction of
the muscle
facial expression
, ✓~ speech, expression, mastication, innervated by the VII cranial nerve;
facial paralysis
orbicular oris
✓~ O: skin of labial mucosa; I: philtrum and both commissures; Action:
closes lips, kissing, pursing
buccinator
✓~ O: anterior part of cheek, pterygomandibular raphe, 1st and 2nd
molar; I: skin at the angle of mouth; Action: pulls mouth laterally, shortens
cheek, keeps food on tooth surface
risorius
✓~ O: superficial fascia of masseter; I: skin at the angle of mouth; Action:
widens the mouth
Levator labii superioris
✓~ O: infraorbital rim, frontal process of maxilla; I: skin of the upper lip
and all of the nose; Action: elevates upper lip
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