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anatomy AOIs

termAOI
Diaphragm [A]: opens thoracic cavity for lungs during inspiration [O]: Ribs C5-C10 and lumbar vertebrae [I]: central tendon
Oblique (internal and external) [A]:compression of abdomen, flexion, and rotation of trunk [O]: ribs (external), iliac crest (internal) [I]: iliac crest (external), ribs (internal)
levator labii superioris [A]:elevation of upper lip [O]:zygomatic bone and infraorbital margin (maxilla) [I]:upper lip
sternocleidomastoid [A]:flexion and rotation of the neck [O]:manubrium and clavicle [I]:mastoid process (temporal bone)
Frontalis [A]:raises eyebrows [O]:epicranial aponeurosis [I]:skin of eyebrows and root of nose
intercostals (external and internal) [A]:elevation and depression of the ribs [O]:superior border of the ribs (external), inferior border of the ribs (internal) [I]:inferior border of the ribs (external), superior border of the ribs (internal)
Platysma [A]:tenses skin of neck; depression of lower lip [O]:fascia of the chest [I]:mandible and corner of the mouth
masseter [A]:closes jaw [O]:zygomatic arch [I]:angle and ramus (mandible)
digastric [A]:elevation of hyoid; opens mouth [O]:lower margin (mandible); mastoid process (temporal bone) [I]:hyoid bone
thyrohyoid [A]:depression of hyoid; elevation of larynx [O]:thyroid cartilage [I]:hyoid bone
rhomboids [A]:adduction and elevation of the scapula [O]:spinous processes of vertebrae C7-T5 [I]:medial border (scapula)
serratus anterior [A]:abduction and rotation of the scapula [O]:true ribs [I]:medial border (scapula)
scalenes [A]:elevation of ribs 1 and 2; rotation of the neck [O]:transverse process of cervical vertebrae (C3-C7) [I]:ribs 1-2
occipitalis [A]:pulls scalp posteriorly [O]:occipital bone [I]:epicranial aponeurosis
sternohyoid [A]:depression of hyoid and larynx [O]:manubrium sternum [I]:hyoid bone
depressor labii superiorsis [A]:depressor of lower lip [O]:body of mandible [I]:lower lip
splenius [A]:rotation of the head; extension of the neck [O]:spinous processes of vertebrae (C7-T6) [I]:temporal and occipital bone
temporalis [A]:closes jaw; retracts mandible [O]:temporal fossa [I]:coronoid process (mandible)
transverse abdominis [A]: compression of abdomen [O]: ribs and iliac crest [I]: linea alba
rectus abdonomis [A]: flexion of trunk; compression of abdominal wall [O]: public crest [I]: xiphoid process and ribs 5-7
mylohyoid [A]: elevation of hyoid and floor of mouth [O]: medial surface (mandible) [I]: hyoid bone
Buccinator [A]: compression of cheek [O]: molar region (maxilla and mandible) [I]: orbicularis oris
orbicularis oris [A]: closes and protrudes lips [O]: maxilla and mandible [I]: angles of the mouth
sternothyroid [A]: depression of hyoid and larynx [O]: manubrium (sternum) [I]: thyroid cartilage
zygomaticus [A]: elevates corners of the mouth [O]: zygomatic bone [I]: corner of mouth
geniohyoid [A]: elevation and protraction of hyoid bone [O]: mental tubercule [I]: hyoid bone
orbicularis oculi [A]: closes eyes [O]: frontal bone and maxilla [I]: eyelids
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