RA Muscles

• Occipito frontalis
• Acricularis
• Anterior
• Superior
• Posterior
• OUT AT A SUPER PARTY

• a very large muscle which covers the top & sides of the skull
• composed of two broad bellies which are connected by the galea apon eurotica or epicranial aponeurois

before or in front of; refers to the ventral or front side of the body; before, in relation to time or space; in front of or in the front part of: ventral, hemal, as contrasted with dorsal, neural

higher than; situated above something else; higher; opposite of inferior.

following after; hence located behind; opposite of anterior; toward the back; opposite of anterior

• Temporalis
• Masseter
• Pterygoidens Medials and Laterials
• TEMPORAILY MASTER PETERS GOLD

*a broad, radiating muscle shaped like a fan is the strongest of the chewing muscles it retrieves the low jaw brings the teeth together has no effect surface form

• *it receives its name from its action
• *chewing (mastication)
• *when contracted it raises the lower jaw

• *known as pterygoids
• *they do not affect surface form
• *deep muscles which permit side to side movement of the lower jaw
• *originate from the processes of the sphenoid bone
• *ptergoids do not actually tear, they grind
• PETERS GOLD METALS are LATE

• Orbicularis Oculi
• Corrugator
• Levator Palpebra Superioris
• OOCLPS

• *means sphincter/ oculi means eyes
• *the broad thin sphincter muscle surronding the eye
• "reflection of thought"

• *frowning muscle
• *small, narrow pyramidal in shape located at the medial end of the eyebrow
• *when the two corrugators contract they produced verticle furrows between the eyebrows
• *think of corrugated paper or a sheet of corrugated tin
• "frowning"

• *the elevator of the upper eyelid
• *contraction raises the upper eyelid
• *it's originates deep in the eyesocket
• *it's long, thin, flat and triangular in shape
• *when it is immpossible to close the upper eyelid, this muscle may be severed

• Procerus
• Nasalis

• *when this muscle contracts, the medial ends of the eyebrows are drawn down
• *forms transverse wrinkles across the root of the nose (Transverse Intercileary Sulci)
• *long, thin slip muscle
• *extends vertically from the lower part of the nasal bone to the lower part of the forehead

• *muscles of the lower part of the nose
• *serves to elevate, dialate, dipress and contract the nostrils
• *muscle fibers run horizontally (across) the nose
• *as opposed to the procerus muscle which run vertically, up the nose

• Orbicularis Oris (2)
• Quadratus Labii Superioris (3)
• Levator Labii Superioris Alaeque Nasi (2)
• Levator Labii Superiors (2)
• Zygomaticus Minor (2)
• Zygomatic Major (2)
• Levator Anguli Oris (2)
• Buccinator (2)
• Risorius (2)
• Depressor Anguli Oris (Triangularis) (2)
• Mentalis (1)

• *the sphincter muscle which encircles the mouth
• *contraction of the orbiculars oris closes the lips
• *unlike the sphincter of the eye it is composed primarily of fibers from other facial & lip muscles

• *which act independently or in unison
• *broad origin, extending along the entire lower margin of the eyesocket
• 1. levator labii superioris alaeque nasi (2)
• 2. levator labii superioris (2)
• 3. zygomaticus minor (2)

elevator

lips

superior (upper)

wing

nose

• *the medial muscle of the QLS
• *the common elevator of the upper lip & the wing of the nose
• *described as long narrow slip running beside the nose
• *the Elvis muscle (or the sneering muscle)

"wing of the nose"

• *middle (intermediate) muscle of the threee QLS Group
• *lateral to the LLSAN it raises the upper lip

• *the lateral muscle of the three QLS
• *inserts into the upper lip at the angle of the mouth, it raises the corners of the mouth & is thus *used in smiling

• *lateral to the Quadratus Labii Superiouris
• *draws the angle of the mouth backward & upward
• *the laughing or smiling muscle helps create the prominence of the nasil labial fold
• *contributes the fullness of the Angulus Oris Eminence

• *elevator of the angle of the mouth it's located near the region of the canine tooth
• *originates from the canine fossa hidden behind the Quadratus Labii Superiors

• *the "trumpeter" muscle
• *a quadrilateral muscle in soft area of the cheek
• *principal muscle of the cheek & and the lateral wall of the mouth

• *a narrow superficial muscle which runs across the cheek
• *originates in the fassia over the masseter muscle
• *antagonistic to the buccinator
• *creates a "false smile"

• *three sided muscle approaches the mouth from below when contracted it depresses the angle of the mouth
• *contributes to the prominence of the anguius oris eminence

• approaches the lower lip from below
• when contracted:
• it pulls the lower lip downward and a little to the side
• changes the form of the line of closure of the mouth
• the angulus oris sulcus become oblique in form

• *wrinkles the chin
• *raises and protrudes the lower lip
• *located on the prominence of the mental eminence and between the two depressor labii inferioris *muscles
• *inserts into the skin of the chin

• Platysma
• Sternocleidomastiod
• Digastricus

• the platysma is a broad, flat and superficial muscle
• *it arises from the fascia covering the large muscles in the region of the collar bone, ribs and shoulder
• *the platysma softens the contour of the neck it is responsible for transverse wrinkles of the neck

• *is a thick muscle which passes obliquely across the side of the neck together these muscles are used to measure the widest part of the neck
• *the muscle arises at two points, the sternum and the clavicle, very close to the midline
• *a small trinangular intervail lies between these heads
• *this is an important muscle to embalmers contraction draws the head sideways alternate action *rotates the head when coordinated the head is pulled forward

• a double bellied muscle which lies below the body of the mandible
• the anterior belly of the two muscles is responsible for one form of the cords of the neck

• auriculares muscles
• 1. anterior auricular
• 2. superior auricular
• 3. inferior auricular

they have more effect on the scalp than the ear, they have no influence on surface form