Download head muscles

Superficial Face & Scalp
Neck
Platysma
In superficial fascia
of neck
O: jaw and lateral
angle of mouth
I: across clavicle &
across upper thorax
Cheeks
Buccinator
O: alveolar processes
(from Moore)
of maxilla &
mandible
I: orbicularis oris
Mouth
Orbicularis Oris
Depressor Anguli
Oris
Mentalis
Zygomaticus Major
Levator Labii
Superioris
Buccinator
(from notes)
Nose
Nasalis
Cervical branch of
Facial Nerve (CN 7)
No real action;
wrinkles skin of neck
& opens moutb
Facial artery of
external common
carotid (of common
carotid)
Buccal branch of
Facial Nerve (CN 7)
Aids mastication and
swallowing by
pressing cheeks
against molar teeth
during chewing; also
used during
whistling & sucking
by forcing cheeks
against teeth
Facial artery
Spinctner muscle
surrounding mouth
Upper: Buccal
branches of Facial
Nerve (CN 7)
Lower: Mandibular
branch of Facial
Nerve (CN 7)
Facial artery
O: body of mandible
I: into corner of
mouth into
orbicularis oris
O: mandible
I: into chin
Mandibular branch
of Facial Nerve (CN
7)
Closes, protrudes,
compresses lips
against teeth; “kiss”;
“whistle”; plays an
important role in
articulation &
mastication
(chewing)
Depresses corner of
mouth; “frown”
Facial artery
O: zygomatic bone
I: corner of mouth
O:maxilla
I: skin on lateral half
of upper lip
Forms muscular part
of cheek & lateral
wall of oral cavity
O: posterior maxilla,
upper medial
mandible &
pterygomandibular
raphae
I: orbicularis oris in
both upper and lower
lips
Zygomatic branch of
Facial Nerve (CN 7)
Buccal branch of
Facial Nerve (CN 7)
Draws lower lip up
over lower teeth;
“pout”; raises skin of
chin during
expression of doubt
Draws corner of
mouth up; “smile”
Raises upper lip
carrying it a little
forward; “smile”
Compress cheeks so
that the food being
chewed can be
pushed toward teeth
Transverse
(compressor naris):
& alar (dilator naris)
Buccal branch of
Facial Nerve (CN 7)
Primary muscle of
nose;
Compressor naris:
compresses the
anterior nasal
aperature“wrinkle
nose”
Dilator naris:
Facial artery
Mandibular branch
of Facial Nerve (CN
7)
Buccal branch of
Facial Nerve (CN 7)
Facial artery
Facial artery
Facial artery
Facial artery
widens the anterior
nasal aperture “flares
nostrils” & draws
nostril down as in
anger
Eyes
Orbicularis Oculi
Levator Palpebrae
Superiorus
Superior Tarsal
(smooth muscle)
Palpebral part:
O: medial palpebral
ligament
(contained in eyelid)
Orbital part:
O: frontal & maxilla
bones
(encircles orbit)
Zygomatic branch of
Facial Nerve (CN 7)
O: sphenoid bone
I: superior tarsal
plate
This muscle is not in
notes. But, it was
discussed in lecture
Cranial Nerve III
(oculomotor nerve)
Sphincter muscle of
eye; contraction
narrows eye opening
& encourages the
flow of tears by
helping to empty the
lacrimal sac.
Orbital part (close
eyes to protect
against glare of light
& dust in air)
Palpebral part
(Close eyelids lightly
to keep cornea from
drying) Lacrimal
part (draw eyelids
and macrimal puncta
medially); Aids
spreading of tears by
holding eyelids close
to eyeballs; wrinkle
skin around eye
“look upward”
Facial artery
Facial artery
“scared eye look”
Scalp
Epicranialis= Occipitofrontalis (frontalis + occipitalis) connected by aponeurosis epicranialis/galea aponeurosis
Frontalis
Wraps over forehead Temporal branches
Elevates eyebrows,
? branch of the
to attach into
of Facial Nerve (CN
“surprised look”;
external carotid
orbicularis oculi;
7)
produces transverse
No bony attachments
wrinkles in forehead
when one frowns
Occipitalis
O: occipital bone
Posterior auricular
Occipital artery of
(continues over skull branches of Facial
external carotid
as aponeurosis)
Nerve (CN 7)