Head and Face Flashcards
Occipitalis
(O, I, A)
O: Occipital & temporal bones
I: Galea aponeurotica
A: Draws scalp posteriorly; elevation of eyebrows
Frontalis
(O, I, A)
O: Galea aponeurotica
I: Fascia & skin of eyes and nose
A: draws scalp anteriorly
Temporoparietalis
(O, I, A)
O: Galea aponeurotica
I: Fascia superior to ear
A: Elevates the ear
Auricular
(O, I, A)
O:
Anterior: Galea aponeurotica & anterior temporal bone
Superior: Galea aponeurotica & superior temporal bone
Posterior: Posterior temporal bone
I:
Anterior ear
Superior ear
Posterior ear
A:
Draws ears anteriorly
Draws ears superiorly
Draws ears posteriorly
Orbicularis oculii
(O, I, A, N)
O + I: (Same origin and insertion)
3 parts: Orbital, palpebral, & lacrimal
Frontal, maxilla,& lacrimal bones - forms an oval sphincter encircling the eye
A: Closes & squints the eye
N: CN VII (7)
Facial nerve
Corrugator Supercilii
(O, I, A, N)
O: Inferior Frontal bone
I: Fascia superior to eyebrow
A: Draws eyebrow inferior & medially
N: CN VII (7)
Facial nerve
Levator Palpebrae Superioris
(O, I, A)
O: Sphenoid
I: Tissue of upper eyelid
A: Elevates upper eyelid
Procerus
(O, I, A)
O: Fascia and skin of Nasal bone
I: Fascia and skin medial to the eyebrow
A:
-Draws medial eyebrow inferiorly (aids in squinting)
-wrinkles the skin of the nose upward
Nasalis
(O, I, A)
O + I:
Transverse: Maxilla → opposite side nasalis of upper cartilage
Alar: maxilla @ nostrils → alar cartilage of nose
A:
-Constricts the nostril
(transverse)
-Flares nostril(alar)
Depressor Septi Nasi
(O, I, A)
O: Maxilla - incisive fossa
I: Cartilage & septum of the nose
A: Constricts nostrils
(by pulling septum down)
Levator Labii Superioris
Alaeque Nasi
(O, I, A, N)
O: Maxilla- frontal process
I: -lateral part of upper lip
-cartilage of nose
A: Flares nostril & Elevates upper lip
N: CN VII (7)
Facial nerve
Levator Labii Superioris
(O, I, A)
O: Maxilla
-inferior orbital margin
I: Lateral part of upper lip
A: Elevates upper lip
Levator Anguli Oris
(O, I, A, N)
O: Maxilla
-canine fossa
I: Angle of the mouth @ the
modiolus
A: Elevates angle of the mouth
N: CN VII (7)
Facial nerve
Zygomaticus Minor
(O, I, A)
O: Zygomatic bone
I: Upper lip
A: Elevates upper lip
Zygomaticus Major
(O, I, A)
O: Zygomatic bone
I: Angle of mouth - modiolus
A: Elevates angles of the mouth
Risorius
(O, I, A, N)
O: Fascia of mandible
I: Angle of mouth - modiolus
A: Draws angle of mouth laterally
N: CN VII Facial nerve
Depressor Anguli Oris
(O, I, A, N)
O: Oblique line of the mandible - Lateral part
I: Angle of the mouth @ the modiolus
A: Depresses angle of the mouth
N: CN VII facial nerve
Depressor Labii Inferioris
(O, I, A)
O: Oblique line of the mandible - Medial part
I: Lower lip (midline)
A: Depresses lower lip
Mentalis
(O, I, A)
O: Incisive fossa of Mandible
I: Skin of chin
A: Elevates, everts, & protracts lower lip
Buccinator
(O, I, A)
O: Maxilla & Mandible
I: Lips & modiolus
A: Compresses cheeks against teeth
Orbicularis Oris
(O, I, A)
O: Circular muscle around the lips; modiolus to modiolus
A: Closes mouth & protracts lips
Temporalis
(O, I, A, N)
O: Temporal fossa
I: Coronoid process & ramus of mandible
A: Elevation and retraction of the mandible @ TMJ
N: CN V Trigeminal
Masseter
(O, I, A, N)
O + I
Superficial layer: Zygomatic bone & zygomatic arch →angle & distal ½ of ramus of the mandible
Deep layer: zygomatic arch →coronoid process & proximal ½ of ramus of the mandible
A: Superficial: Elevation & Protraction of the mandible @ the TMJ
Deep: Elevation & Retraction of mandible @ TMJ
N: CN V Trigeminal
Medial Pterygoid
(O, I, A)
O: Sphenoid, Palatine & maxilla
I: Angle & interior surface of mandible
A: Elevation, Protraction & Contralateral deviation of the mandible @ the TMJ
Lateral Pterygoid
(O, I, A)
O: Sphenoid (2 heads: superior and inferior)
I: Capsule articular disc, & neck of mandible
A: Protraction & Contralateral deviation of mandible @ the TMJ
- Depression of mandible @ TMJ
