Lecture 14 - Face Flashcards
What is the action of the platysma?
RL14 S60
- depresses mandible
- tenses skin of inferior face and neck
What is the action of the occipitofrontalis?
RL14 S60
- elevates eyebrow
- protracts scalp
What is the action of the orbicularis oculi and what is its insertion?
RL14 S61
Action:
-closes eyelids
Insertion:
-skin around margins of orbit
What is the action of the procerus and what is its insertion?
RL14 S61
Action:
- depresses medial side of eyebrow
- wrinkles skin over nose
Insertion:
-skin between eyebrows
What is the action of the nasalis and what is its insertion?
RL14 S62
Action:
- depresses alas laterally
- dilates anterior nasal aperture
Insertion:
-alar cartilage
What is the action of the orbicularis oris?
RL14 S62
Action:
- closes oral fissure
- compresses and protrudes lips
What is the action of the levator labii superioris and what is it insertion?
RL14 63
Action:
-dilators of mouth
Insertion:
-skin of upper lip
What is the the action of zygomaticus minor and what is its insertion?
RL14 S63
Action:
-dilates mouth
Insertion:
-skin of upper lip
*located above zygommaticus major
What is the action of the zygomaticus major and what is its insertion?
RL14 S64
Action:
-elevates labial commissure
Insertion:
-angle of mouth
*located below zygomaticus minor
What is the action of the risorius and what is its insertion?
RL14 S64
Action:
-depresses labial commissures (corner of mouth
Insertion:
-angle of mouth
What is the action of the depressor anguli oris and what is its insertion?
RL14 S65
Action:
-depresses labial commissure
Insertion:
-angle of mouth
What is the action of the depressor labii inferioris and what is its insertion?
RL14 S65
Action:
- dilates mouth
- depresses and everts lower lip
Insertion:
-skin of lower lip
What are the arteries of the face and their branches?
RL14 S66-68
Facial artery:
- inferior labial artery
- superior labial
- lateral nasal artery
Transverse facial artery:
-anastomoses with facial artery
Superficial temporal artery
What are the sensory nerves of the face and scalp?
RL14 S69
CN V:
- ophthalmic branch/V1 (frontal region, upper eyelid, and dorsum of nose)
- maxillary branch/V2 (upper jaw, zygomatic region and lower eyelid)
- mandibular branch/V3 (lower jaw and temporal region
Greater occipital nerve:
-posteromedial occipital region
Lesser occipital nerve:
-lateral occipital region
Great auricular nerve:
-auricle and posterior mandible/lateral neck
