Neck

• digastric action

  elevate and steadies hyoid, deglutition
• mylohyoid action

  forms the floor of the oral cavity

  elevate hyoid

  deglutition
• omohyoid origin

  superior border of the scapula
• platysma

  tense skin of neck

  depress mandible
• anterior scalene origin

  anterior tubercle cervical vertebrae
• posterior scalene insertion

  rib 2
• posterior scalene action

  flex neck laterally

  elevate rib 2
• sternocleidomastoid origin

  manubrium

  sternal end of clavicle
• sternocleidomastoid insertion

  mastoid process
• sternocleidomastoid action

  flex neck laterally

  rotate neck to opposite side
• the hyoid is in the insertion for the following muscles:

  • thyrohyoid
  • digastric
  • mylohyoid
  • omohyoid
  • sternohyoid
• the sternum is the origin for the following muscles:

  • sternohyoid
  • sternothyroid
• depress hyoid

  • omohyoid
  • sternohyoid
  • sternothyroid
  • thyrohyoid
• rib 1 is the insertion for the following muscles:

  • anterior scalene
  • middle scalene
• flex neck laterally

  elevate rib 1


  anterior scalene

  middle scalene
• posterior tubercle cervical vertebrae is the origin for the following muscles:

  • middle scalene
  • posterior scalene