Axial muscles Flashcards
Masseter
zygomatic arch and maxilla
mandibular ramus and angle
closes jaw, elevates mandible
Temporalis
temporal fossa
coronoid process of the mandible
closes jaw
epicranlus (occipitalis)
occipital bone, mastoid process of the temporal bone
galea aponeurotica (scalp)
pulls scalp backwards
epicranlus (frontals)
galea aponeurotica (scalp) skin of eyebrows, root of nose raises eybrows
orbicularis ocull
frontal and maxillary bones/ligaments around orbit
encircles orbit/tissue in in eyelid
closes eyes, blinking, squinted
orbicularis oris
lip muscles
encircles mouth, inserts into muscle/skin around mouth
closes mouth, kissing, speech
zygomaticus
zygomatic bone
skin/muscle corner of the mouth
smiling
platysma
fascia of chest and deltoid
lower part of mandible
depresses mandible
sternocleidomastoid
sternum(manubrium) & clavicle (medial)
temporal bone (mastoid process) & occipital bone
neck flexion forward, rotate head toward shouder
sternohyoid
manbrium-medial end of clavicle
lower margin of hyoid bone
depresses larynx
latissimus dorsl
indirect- last 6 thoracic vertebrae, rib, and iliac crest
humerus(intertubercular suulcus)
arm extention, adducts, medically rotates arm, brings arm down
pectoralis major
clavicle, sternum, rib cartilage, aponeurosis of external oblique
converge by short tendon to humerous
arm flexion, adducts/radially rotates arm, pulls chest upward
pectoralis minor
rib 3-5
coracoid process of scapula
draws scapula forward/rib cage up
serratus anterior
ribs (lateral)
scapula (anterior.vertebral)
scapula forward, rotates scapula, abduction of arm
external intercostals
inferior borders of rib
superior borders of ribs
inspiration