muscle list- head and nexk Flashcards
scalenes
O: transverse process of cervical vertebrae
I: superior surface of ribs 1-2
A: elevates ribs or flexes neck
sternothyroid
O: manubrium of sternum & 1st costal cartilage
I: thyroid cartilage of larynx
A: depresses hyoid & larnx
sternohyoid
O: manubrium of sternum & clavicle
I: hyoid
A: depresses hyoid & larnx
mylohyoid
O: medial surface of mandible
I: hyoid
A: elevates floor of mouth & hyoid
stylohyoid
O: styloid process of temporal bone
I: hyoid
A: elevates larnx
digastric
O: mandible & mastoid process of temporal bone
I: hyoid
A: depresses mandible , elevates larnx
sternocleidomastoid
O: manubrium of sternum & clavicle
I: mastoid process of temporal bone
A: flexes neck & rotates head
masseter
O: zygomatic arch
I: lateral surface of mandibular ramus
A: elevates mandible & closes jaw
orbicularis oris
O: maxillary bone & mandible
I: lips
A: (kissing)
zygomaticus
O: zygomatic bone
I: corner of mouth
A: retracts & elevates corner of mouth
frontalis
O: epicranial aponeurosis
I: skin of eyebrow & bridge or nose
A: wrinkles forehead and raises eyebrows
orbicularis oculi
O: medial margin of orbit
I: skin around eyelid
A: closes eye
buccinator
O: molar regions of maxilla & mandible
I: orbicularis oris
A: whistling
temporalis
O: temporal bone
I: coronoid process of mandible
A: elevates mandible , closes jaw
platysma
O: fascia of neck and chest
I: mandible & skin of cheek
A: frowning
