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9 Cards in this Set

  • Front
  • Back
PLATYSMA

O & I
ORIGIN

1) Fascia over superior Pectoralis Major
2) Deltoid

INSERTION

1) Inferior border of mandible
2) Skin
3) Subcutaneous tissue of lower face
PLATYSMA

Innervation
cervical branch of the facial nerve
PLATYSMA

Vasculature
superficial vessels of the neck
PLATYSMA

Main Action
draws corners of the mouth inferiorly

"egad" muscle
STERNOCLEIDOMASTOID

O & I
ORIGIN

1) Sternal - Anterior manubrium

2) Clavicular - Superior medial 1/3 of the clavicle

INSERTION

1) Mastoid Process
2) Superior Nuchal Line
STERNOCLEIDOMASTOID

Innervation
1) Spinal root of Accessory Nerve CN XI

2) Anterior Rami C2 - C3
STERNOCLEIDOMASTOID

Vasculature
Occipital and superior thyroid
STERNOCLEIDOMASTOID

Main Action
Bilaterally: Flex neck

Unilaterally:

1) Ipsilateral lateral neck flexion

2) Contralateral rotate head and point it upward
TRAPEZIUS

on previous slides
TRAPEZIUS

on previous slides