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Muscles of the Head & Neck
Origin, Insertion, Innervation, Blood Supply, Action
92
Anatomy
Undergraduate 4
03/12/2012

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Term
ORIGIN & INSERTION

Frontalis
Definition
Origin: Galea aponeurotica

Insertion: Skin of the eyebrow
Term
ACTION

Frontalis
Definition
Elevates eyebrows

Wrinkles forehead
Term
INNERVATION

Frontalis
Definition
Temporal Branches of Facial N.
Term
BLOOD SUPPLY

Frontalis
Definition
Supraorbital A.

Supratrochlear A.
Term
ORIGIN & INSERTION

Occipitalis
Definition
Origin: Superior nuchal line

Insertion: Galea aponeurotica
Term
ACTION

Occipitalis
Definition
Pulls scalp posteriorly

Elevates eyebrows
Term
INNERVATION

Occipitalis
Definition
Posterior Auricular Branch of Facial N.
Term
BLOOD SUPPLY

Occipitalis
Definition
Occipital A.
Term
ORIGIN & INSERTION

Procerus
Definition
Origin: Nasal bone

Insertion: Skin between eyebrows
Term
ACTION

Procerus
Definition
Depresses medial corners of eyebrows
Term
INNERVATION

Procerus
Definition
Temporal Branch of Facial N.
Term
BLOOD SUPPLY

Procerus
Definition
Supratrochlear A.
Term
ORIGIN & INSERTION

Corrugator supercilii
Definition
Origin: Medial part of auperciliary arch

Insertion: Skin of medial half of eyebrow
Term
ACTION

Corrugator supercilii
Definition
Pulls eyebrows together medially
Term
INNERVATION

Corrugator supercilii
Definition
Temporal Branch of Facial N.
Term
BLOOD SUPPLY

Corrugator supercilii
Definition
Supratrochlear A.
Term
ORIGIN & INSERTION

Orbicularis oculi
Definition
ORBITAL PART
Origin: Medial orbital margin, medial palpebral ligament

Insertion: Skin of lateral cheek

PALPEBRAL PART
Origin: Medial palpebral ligament

Insertion: Lateral palpebral raphe
Term
ACTION

Orbicularis oculi
Definition
Closes eyelids
Term
INNERVATION

Orbicularis oculi
Definition
Temporal & Zygomatic Branches of Facial N.
Term
BLOOD SUPPLY

Orbicularis oculi
Definition
Supraorbital A.

Supratrochlear A.

Infraorbital A.

Angular Branch of Facial A.
Term
ORIGIN & INSERTION

Nasalis
Definition
Origin: Maxilla above incisor teeth and canine teeth

Insertion: Ala of nose, midline aponeurosis
Term
ACTION

Nasalis
Definition
Flattens nose

Flare nostrils
Term
INNERVATION

Nasalis
Definition
Buccal Branch of Facial N.
Term
BLOOD SUPPLY

Nasalis
Definition
Superior Labial Branch of Facial A.
Term
ORIGIN & INSERTION

Levator labii superioris alaque nasi
Definition
Origin: Frontal process of maxilla

Insertion: Ala of nose, skin of upper lip
Term
ACTION

Levator labii superioris alaque nasi
Definition
Elevates upper lip

Flares nostrils
Term
INNERVATION

Levator labii superioris alaque nasi
Definition
Buccal Branch of Facial N.
Term
BLOOD SUPPLY

Levator labii superioris alaque nasi
Definition
Infraorbital A.

Superior Labial Branch of Facial A.
Term
ORIGIN & INSERTION

Depressor septi
Definition
Origin: Maxilla near midline above incisor teeth

Insertion: Nasal septum
Term
ACTION

Depressor septi
Definition
Depresses nasal septum

Involved in flaring nostrils
Term
INNERVATION

Depressor septi
Definition
Buccal Branch of FAcial N.
Term
BLOOD SUPPLY

Depressor septi
Definition
Superior Labial Branch of Facial A.
Term
ORIGIN & INSERTION

Orbicularis oris
Definition
Origin: Skin & fascia of lips

Insertion: Skin & fascia of lips
Term
ACTION

Orbicularis oris
Definition
Purses lips
Term
INNERVATION

Orbicularis oris
Definition
Buccal Branch of Facial N.
Term
BLOOD SUPPLY

Orbicularis oris
Definition
Superior & Inferior Labial Branches of Facial A.

Mental A.

Infraorbital A.
Term
ORIGIN & INSERTION

Levator labii superioris
Definition
Origin: Inferior margin of orbit

Insertion: Skin of upper lip
Term
ACTION

Levator labii superioris
Definition
Elevates upper lip
Term
INNERVATION

Levator labii superioris
Definition
Buccal Branch of Facial N.
Term
BLOOD SUPPLY

Levator labii superioris
Definition
Infraorbital A.

Superior Labial Branch of Facial A.
Term
ORIGIN & INSERTION

Zygomaticus minor
Definition
Origin: Lower surface of zygomatic bone

Insertion: Lateral part of upper lip
Term
ACTION

Zygomaticus minor
Definition
Elevates upper lip
Term
INNERVATION

Zygomaticus minor
Definition
Buccal Branch of Facial N.
Term
BLOOD SUPPLY

Zygomaticus minor
Definition
Transverse Facial A.

Facial A.
Term
ORIGIN & INSERTION

Zygomaticus major
Definition
Origin: Upper lateral suface of zygomatic bone

Insertion: Skin of angle of mouth
Term
ACTION

Zygomaticus major
Definition
Elevates & draws the corner of the mouth laterally
Term
INNERVATION

Zygomaticus major
Definition
Zygomatic & Buccal Branches of Facial N.
Term
BLOOD SUPPLY

Zygomaticus major
Definition
Transverse Facial A.

Facial A.
Term
ORIGIN & INSERTION

Levator anguli oris
Definition
Origin: Canine fossa of maxilla

Insertion: Angle of mouth
Term
ACTION

Levator anguli oris
Definition
Elevates angle of mouth
Term
INNERVATION

Levator anguli oris
Definition
Buccal Branch of Facial N.
Term
BLOOD SUPPLY

Levator anguli oris
Definition
Infraorbital A.

Superior Labial Branch of Facial A.
Term
ORIGIN & INSERTION

Risorius
Definition
Origin: Fascia of lateral cheek

Insertion: Skin of angle of mouth
Term
ACTION

Risorius
Definition
Draws the corner of mouth laterally
Term
INNERVATION

Risorius
Definition
Buccal Branches of Facial N.
Term
BLOOD SUPPLY

Risorius
Definition
Transverse Facial A.

Facial A.
Term
ORIGIN & INSERTION

Buccinator
Definition
Origin: Pterygomandibular raphe, mandible, maxilla lateral to molar teeth

Insertion: Angle of mouth and lateral portion of upper and lower lips
Term
ACTION

Buccinator
Definition
Pulls corner of mouth laterally

Presses cheek against teeth
Term
INNERVATION

Buccinator
Definition
Buccal Branches of Facial N.
Term
BLOOD SUPPLY

Buccinator
Definition
Facial A.
Term
ORIGIN & INSERTION

Depressor anguli oris
Definition
Origin: Oblique line of mandible

Insertion: Angle of mouth
Term
ACTION

Depressor anguli oris
Definition
Pulls corner of mouth downward
Term
INNERVATION

Depressor anguli oris
Definition
Marginal Mandibular & Buccal Branches of Facial N.
Term
BLOOD SUPPLY

Depressor anguli oris
Definition
Inferior Labial Branch of Facial A.

Mental A.
Term
ORIGIN & INSERTION

Depressor labii inferioris
Definition
Origin: Anterior surface of mandible

Insertion: Skin of lower lip
Term
ACTION

Depressor labii inferioris
Definition
Depresses lower lip
Term
INNERVATION

Depressor labii inferioris
Definition
Marginal Mandibular Branch of Facial N.
Term
BLOOD SUPPLY

Depressor labii inferioris
Definition
Inferior Labial Branch of Facial A.

Mental A.
Term
ORIGIN & INSERTION

Mentalis
Definition
Origin: Anterior surface of mandible near mental symphysis

Insertion: Skin of chin
Term
ACTION

Mentalis
Definition
Elevates skin of chin
Term
INNERVATION

Mentalis
Definition
Marginal Mandibular Branch of Facial N.
Term
BLOOD SUPPLY

Mentalis
Definition
Mental A.

Inferior Labial Branch of Facial A.
Term
ORIGIN & INSERTION

Platysma
Definition
Origin: Fascia overlying the pectoralis major and deltoid muscles

Insertion: Inferior border of the mandible, skin of lower face
Term
ACTION

Platysma
Definition
Draws corners of mouth down

Aids in depression of mandible
Term
INNERVATION

Platysma
Definition
Cervical Brance of Facial N.
Term
BLOOD SUPPLY

Platysma
Definition
Facial A.
Term
ORIGIN & INSERTION

Temporalis
Definition
Origin: Temporal fossa, temporal fascia

Insertion: Coronoid process of mandible, anterior surface of ramus of mandible
Term
ACTION

Temporalis
Definition
Elevates mandible

Retracts mandible (posterior fibers)
Term
INNERVATION

Temporalis
Definition
Anterior & Posterior Deep Temporal N's from Mandibular Division of Trigeminal N. (V3)
Term
BLOOD SUPPLY

Temporalis
Definition
Anterior Deep Temporal A.

Posterior Deep Temporal A.
Term
ORIGIN & INSERTION

Masseter
Definition
Origin: Dygomatic arch, zygomatic bone

Insertion: Lateral surface of ramus, angle of mandible
Term
ACTION

Masseter
Definition
Elevates mandible
Term
INNERVATION

Masseter
Definition
Nerve to Masseter from Mandibular Division of Trigeminal N. (V3)
Term
BLOOD SUPPLY

Masseter
Definition
Masseteric Branch of Maxillary A.
Term
ORIGIN & INSERTION

Lateral Pterygoid
Definition
SUPERIOR HEAD
Origin: Greater wing of sphenoid bone

Insertion: Capsule, Articular disk of temporomandibular joint

INFERIOR HEAD
Origin: Lateral surface of lateral pterygoid plate

Insertion: Neck of mandible
Term
ACTION

Lateral Pterygoid
Definition
Protracts mandible

Opens mouth

Active in grinding actions of chewing
Term
INNERVATION

Lateral Pterygoid
Definition
Lateral Pterygoid Branch of Mandibular Division of Trigeminal N. (V3)
Term
BLOOD SUPPLY

Lateral Pterygoid
Definition
Pterygoid Branch of Maxillary A.
Term
ORIGIN & INSERTION

Medial Pterygoid
Definition
Origin: Medial surface of lateral pterygoid plate, pyramidal process of palatine bone, tuberosity of maxilla

Insertion: Medial surface of ramus & angle of mandible
Term
ACTION

Medial Pterygoid
Definition
Elevates mandible

Protracts mandible
Term
INNERVATION

Medial Pterygoid
Definition
Medial Pterygoid Branch of Mandibular Division of Trigeminal N. (V3)
Term
BLOOD SUPPLY

Medial Pterygoid
Definition
Pterygoid Branch of Maxillary A.
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