ANAT 315 - Muscles of Face & Neck

where are the muscles of facial expression located? what are their collective/overall function?

label

what is the action of frontalis?

what is the action of corrugator supercilii?

what is the action of orbicularis oculi?

label. what does each part do?

what is the action of orbicularis oris?

label. what is the action?

what is the origin, insertion, & action of platysma? what other muscle group is it part of?

origin: superior clavicle

also a superficial muscle of the neck

what muscle is both a muscle of facial expression and an accessory muscle of mastication?

buccinator

label. what is the action?

what nerve supplies the muscles of facial expression? what skull hole does it go through?

label. what muscles does it supply?

A. frontalis

B. corrugator supercilii

C. orbicularis oculi

D. zygomaticus

E. platysma

F. buccinator

G. orbicularis oris

e)

what is the collective function of the muscles of mastication? what joint are they associated with?

label

A. ramus

B. body

C. angle

D. condylar process

E. coronoid process

what actions are produced at the TMJ?

describe origin vs insertion

label. state origin, insertion, action

label

state origin, insertion, action of this muscle

label. state origin, insertion, action

label. state origin, insertion, action

which nerve supplies the muscle of facial expression?

which muscle is an accessory muscle of mastication and is NOT supplied by V3? what is it supplied by?

supplied by facial nerve

what areas do each of the branches of CN V supply? what skull hole does each branch pass through?

label. what is it a branch of? what does it supply?

list the superficial and deep muscles of the anterolateral neck

state origin and insertion of platysma

label. state action

and tenses fascia of neck

label. state origin, insertion, action (unilateral & bilateral)

label. state origin, insertion, action (bilateral & unilateral)

what is the action of the suprahyoid muscles? list the 4 suprahyoid muscles

label both parts of this muscle. list origin & insertion of both parts

origin insertion

Anterior Belly	Mandible	Intermediate tendon on the hyoid bone
Posterior Belly	Mastoid process of temporal bone	Intermediate tendon on the hyoid bone

label. list origin and insertion

origin insertion

Stylohyoid

Styloid process of temporal bone

Hyoid bone

label. list origin & insertion

origin insertion

Mylohyoid	Mandible (inner inferior border)	Hyoid bone
Geniohyoid	Mandible (inner chin)	Hyoid bone

cannot see geniohyoid

label. what do they supply?

label. what is the collective/overall action of these?

label. state origins and insertions. list from superficial to deep

Muscle	Origin	Insertion
Omohyoid	Scapula	Hyoid bone
Sternohyoid	Manubrium of sternum	Hyoid bone
Thyrohyoid	Thyroid cartilage	Hyoid bone
Sternothyroid	Manubrium of sternum	Thyroid cartilage

superficial: sternohyoid, omohyoid

deep: sternothyroid, thyrohyoid

label

label. what does this supply?

sternocleidomastoid