head neck face muscles Flashcards
Occipitalis SKULL
O. occipital ridge
I. base of scalp
A. anchors, draws scalp posteriorly
Suboccipitals SKULL
O. spinous transverse process of C1 C2
I. lower occipital bone, transverse process of C1
A. extension, rotation, lateral flexion of the head
Frontalis SKULL
O. scalp
I. skin at supraorbital rim
A. anchors, draw scalp anteriorly; raises eyebrows
Temporalis SKULL
O. temporal fossa
I. coronoid process of mandible
A. mastication
Masseter FACE
O. zygomatic arch
I. angle of mandible
A. mastication
Medial pterygoid FACE
O. sphenoid, maxilla
I. medial angle of mandible
A. mastication, lateral deviation of mandible
Lateral pterygoid FACE
O. sphenoid
I. mandible, articular disk of TMJ
A. protrusion, depression, lateral deviation of mandible
Buccinator FACE
O. maxilla, mandible
I. orbicularis oris
A. moves cheeks; whistling, blowing, sucking
Orbicularis oris FACE
O. muscles fibers around mouth
I. skin around lips
A. closes, shapes lips during speech
Orbicularis occuli
O. medial orbital socket
I. skin around eye
A. closes the eye
Zygtomaticus
Major, Minor FACE
O. muscle fibers around mouth
I. skin of upper lip corner of the mouth
A. raises upper lip, corner of mouth to expose teeth, smile
Platysma (anterior neck)
O. fascia of chest muscles
I. lower mandible, skin @ corners of mouth
A. pulls mouth into frown, assists depression of the mandible
Sternocleidomastoid (anterior neck)
O. manubrium of sternum, medial clavicle
I. mastoid process
A. flexion, lateral flexion, rotation of head, neck, to opposite side
Suprahyoids (anterior neck)
O. mandible, styloid process
I. hyoid
A. elevation of the hyoid, tenses floor if mouth when swallowing
Infrahyoids (anterior neck)
O. manubrium, medial clavicle, superior border of scapula
I. hyoid, thyroid cartilage
A. depression, stabilization of the hyoid and thyroid cartilage
