Bones and Muscles of Mastication (palp and non palp)

Frontal squama

Temporalis

Superciliary arches

corregatro supercilly

Mastoid process

SCM

Superior nuchal line

Occipitalis

External Occipital Protuberance (Inion)

UFT

Maxilla

Masseter

Zygomatic prominence

Zygomaticus

Zygomatic arch

Superfical masseter

Angle and ramus of mandible

Masseater

Body and bose of mandible (superiorly and inferiorly, "i can feel the change in angle"

Mentalis

Condyle of mandible

lateral pytergoid

Coronoid process

Temporalis

Temporalis (palp)

O: Temporal fossa and fascia

I: Coronoid process of mandible

A: Elevates and retracts mandible

Masseter(palp) - superficial layer

O: zygomatic arch

I: angle and ramus of mandible

A: Elevates mandible

Masseter(palp)r- deep layer

O:maxilla

I: angle and ramus of mandible

A: elevates the mandible

lateral pterygoid muscle

Lateral

O: lateral surface of lateral pterygoid plate of sphenoid

I: condyloid process of mandible + disc

A: bilaterally, protrusion

unilaterally swing jaw to contralateral

medial pterygoid muscles

O: medial surface of lateral pterygoid plate of sphenoid

I: medial surface of ramus and manduble

A: elevates mandible

contributes to protrusion of jaw

Occipitals (palp)

O: galea aponeurotica

I: Superior nuchal line

A: anchors and retracts the galea posteriorly

Frontalis (palp)

O galea aponeurotica

I skin over eyebrows

A raises eyebrow, wrinkles forehead

Orbicularais Oris (kissing muscle)

O: maxilla and mandible

I: Lips

A: closes and protrudes lips, helps keep food in mouth

Zygomaticus major

O: lateral aspect of zygomatic bone

I: angle of the mouth

A: draws corner of the mouth superolaterally, as in smiling

Zygomaticus minor

O: anterior aspect of zygomatic bone

I: skin of the upper lip

A: elevates upper lip, thus exposing upper teeth

Levator labii superioris

O: infraorbital margin of maxilla

I: skin of the upper lip

A: elevates amd curls upper lip and contributes to smile

Depressor labii inferioris

O: body of mandible and platysma

I: skin of lower lip

A: depresses lower lip

Depressor anguli oris (pouting muscle)

O: base of mandile

I: angle of the mouth

A: depresses angle of mouth inferolaterally

Mentalis

O: body of the mandible

I: skin of the chin

A: protrudes lower lip and raises skin on chin, as in pouting

Risorius

O: fascia of the cheek

I: angle of the mouth

A: pulls angles of mouth laterally

Buccinator (whistling/squirrel)

O: alveolar processes of mandible and maxilla

I: angle of the mouth

A: presses cheek against teeth and lips, as in whistling, helps keep food in mouth, and resist distension of cheek

Orbicularis oculi

O: lacrimal bone and orbital margin

I: skin around orbit

A: closes eye during winking or squinting

Corrugator supercilii (frown)

O: superciliary arch

I: skin above supraorbital margin and superciliary arch

A: draws eyebrows together, creating vertical wrinkles, contributes to our frown

levator palpebrae superioris (ONLY MUSCLES OF FACE NOT INNERVATED BY CN 7 FACIAL NERVE)

O: sphenoid

I: skin of upper eyelid

A: elevate upper eyelid

Platysma

O: inferior border of mandible and skin of face

I: fascia covering the pectoralis major and deltoid

A: depresses corner of mouth and tenses skin around neck