Upper Body Muslces Flashcards
Frontalis
O: epicranial aponeurosis
I: skin of eyebrow and forehead
Function: move brows
Occipitalis
O: occipital bone + mastoid part of temp.
I: epicranial aponeurosis
Function: retracts scalp
Orbicularis oculi
O: orbital, palperbral, + lacrimal part
I: skin around area
Function: closes eye
Orbicularis orus
O: maxilla + mandible
I: skin of lips
Function: purses lips
Platysinus
O: pect major + delitod
I: inf border of mandible
Function: lower jaw depression
Zygomatis minor
O: zygomatic bone
I: upper lip
Function: elevation of upper lip
Zygomatis major
O: zygomatic bone
I: corner lip
Function: smiling
Buccinator
O: alveolar process of maxilla
I: corners of mouth
Function: pushes food medially
Temporalis
Mastication
O: frontal + parietal bone
I: coronoid process of mandible
Function: elevation of mandible
Mastoid
O: zygomatic arch
I: mastoid process of temp bone
Function: neck flexion
Masseter
Mastication
O: zygomatic arch
I: superior angle of mand, upper ramus
Function: elevation of mandible
Sternocleidomastoid
O: clavicle
I: mastoid process
Function: head flexion
Superior spleinus capitis
O: c7-t4
I: occipital + zyg process of temp bone
Function: lateral flexion
Inferior spleinus cervicis
O: spinous process
I: axis
Function: extension of neck
Inferior spleinus cervicis
O: spinous process
I: axis
Function: extension of neck
