ANOIA Head/Neck/Face Flashcards
Sternocleidomastoid Origin
Sternal head: top of manubrium
Clavicular head: medial 1/3 of clavicle
Sternocleidomastoid insertion
Mastoid process of temporal bone and lateral portion of superior nuchal line of occiput
Sternocleidomastoid Action
Unilaterally: Laterally flex head to same side, rotate head to opposite side
Bilaterally: flex the neck, assist in elevation of rib cage during inhalation
Sternocleidomastoid Nerve innervation
Spinal accessory nerve
Anterior scalene origin
transverse processes of cervical vertebrae 3-6 (anterior tubercles)
Anterior scalene insertion
first rib
Anterior scalene nerve innervation
cervical plexus
Middle Scalene origin
transverse processes of cervical vertebrae 2-7 (posterior tubercles)
Middle scalene insertion
first rib
Middle scalene action
Unilaterally: with ribs fixed laterally flex head and neck to same side
Bilaterally: elevate ribs during inhalation
Anterior scalene action
Unilaterally: with ribs fixed laterally flex head and neck to same side
Bilaterally: elevate ribs during inhalation, flex head and neck
Posterior scalene origin
transverse processes of cervical vertebrae 6-7 (posterior tubercles)
Posterior scalene insertion
second rib
Posterior scalene action
Unilaterally: with ribs fixed laterally flex head and neck to same side
Bilaterally: elevate ribs during inhalation
Posterior scalene nerve innervation
cervical