lecture 14 a&p of speech

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Zygomatic major origin and insertion

zygomatic bone to skin mucosa and muscle at oral angle

Levator anguli oris origin and insertion

maxilla to oral angle

Levator anguli oris function

bares the canines or snarl with no function in speech

Depressor anguli oris origin and insertion

mandible to lower lip at oral angle

Depressor labii inferior origin and insertion

mandible to lower lip

Mentalis origin and insertion

from mandible up to lower lip

Risorius origin and insertion

from angle of mandible to angle of mouth

Buccinator origin and insertion

large area of mandible and maxilla to upper and lower lips at oral angle

Buccinator role in the face

forms the muscle bulk of the cheek

Platysma description

thin broad flat muscle that covers most of the lateral and anterior regions of the neck

Platysma origin and insertion

from region around pectoralis major to oral angles

Which muscle bares the canines

levator anguli oris

Which muscle forms the bulk of the cheek

buccinator

Which muscle covers the lateral and anterior neck

platysma

Which muscles attach to the lower lip from the mandible

depressor labii inferior and mentalis

Which muscles attach at the oral angle from the mandible

depressor anguli oris and risorius

RIS

risorius

BUC

buccinator

OOS

orbicularis oris superior

OOI

orbicularis oris inferior

MTL

mentalis

LLS

levator labii superior

DAO

depressor anguli oris

DLI

depressor labii inferior

UL

upper lip

LL

lower lip

Zyg major

zygomatic major

Zyg minor

zygomatic minor

LLSAN

levator labii superior alaeque nasi and not covered in this class

Lip spreading for /i/ muscles

RIS BUC and zyg major

Lip rounding for /u/ muscles

OOS and OOI

Lip constriction for /p/ /b/ /m/ /f/ /v/ upper lip muscle

OOS

Upper lip muscle for constriction that is NOT used for /f/ and /v/

OOS

Lip constriction for /p/ /b/ /m/ /f/ /v/ lower lip muscles

OOI and MTL

Lip release for /p/ and /b/ upper lip muscles

zyg minor and LLS

Lip release for /p/ and /b/ lower lip muscles

DAO and DLI

Which sounds use lip spreading

/i/

Which sounds use lip rounding

/u/

Which sounds use lip constriction

/p/ /b/ /m/ /f/ /v/

Which sounds use lip release

/p/ and /b/

Which muscles spread the lips for /i/

risorius buccinator and zygomatic major

Which muscles round the lips for /u/

orbicularis oris superior and inferior

Which muscles lower the lower lip to release /p/ and /b/

depressor anguli oris and depressor labii inferior

Which muscles raise the upper lip to release /p/ and /b/

zygomatic minor and levator labii superior

Upper lip muscle in the diagram

orbicularis oris superior

Lower lip ring muscle in the diagram

orbicularis oris inferior

Muscle just below the lower lip on the mandible

depressor labii inferior

Small muscle at the chin

mentalis

Muscles labeled on the cheek diagonal from the nose to the oral angle

levator labii superior alaeque nasi then levator labii superior then zygomatic minor then zygomatic major

Muscle labeled below the oral angle

depressor anguli oris

Muscle labeled in the lateral view of the cheek

buccinator

Order of upper and lower teeth from the midline back

central incisor then lateral incisor then canine then first premolar then second premolar then first molar then second molar then third molar

Most anterior tooth at the midline

central incisor

Tooth right next to the central incisor

lateral incisor

Tooth between the lateral incisor and first premolar

canine

Two premolars in order

first premolar then second premolar

Three molars in order

first molar then second molar then third molar

Most posterior tooth

third molar

Class I occlusion

normal bite alignment between the upper and lower teeth

Class II malocclusion

lower jaw sits too far back relative to the upper jaw

Class II malocclusion bite name

overbite

Class III malocclusion

lower jaw sits too far forward relative to the upper jaw

Class III malocclusion bite name

underbite

Malocclusion with overbite

Class II

Malocclusion with underbite

Class III

Tongue is a

muscular hydrostat

Muscular hydrostat definition

contracting muscle fibers constrict compartments in one dimension and displaced fluid moves to relaxed regions of the tongue

How the tongue moves without bones

by shifting fluid from contracted regions to relaxed regions

Who described the tongue as a muscular hydrostat in the lecture

Luschei 1991

Real life example of a muscular hydrostat

squeezing a gel filled squishy ball so it bulges elsewhere

Tongue muscles labeled in the lecture

superior longitudinal lingual then genioglossus then hyoglossus then styloglossus then palatoglossus

Other muscles labeled near the tongue

geniohyoid and mylohyoid

Front tip of the tongue

apex

Superior longitudinal lingual muscle location

top surface of the tongue

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