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Living Anatomy

Head & Neck

Posterior Cervical Region Neck Muscles trapezius, levator scapula, splenius group (cervicis & capitis), semispinalis capitis, suboccipital group
obliquus capitis inferior a-rotates head to same side o-sp of C2 i-tp of C1
obliquus capitis superior a-extends head, rotates head posteriorlaterally o-tp of C1 i-occipital bone b/t superior and inferior nuchal lines
rectus capitis posterior major a-extend head, rotate to same side o-sp of C2 i-lateral portion of inferior nuchal line of occiput
rectus capitis superior minor a-extend head, rotate to same side o-posterior arch of C1 i-medial part of inferior nuchal line
sternocleidomastoid a-uni-lat flex head to same side, rotate head to same side bi- flex head o-sternal-manubrium clavicular-medial portion of clavicle i-mastoid process of temporal bone
scalenes a-uni-lat flex head bi-flex head o-tp of c2-c7 anterior-c3-c6 middle-c2-c7 posterior-c4-c6 i-anterior and middle-first rib posterior-second rib
brachial plexus exits the neck b/t the anterior and middle scaliness. Distal to this pt it travels b/t the clavicle and first rib, then deep to pectorals minor to the axilla.
cranial vault frontal, parietals, temporals, occipital, sphenoid, ethmoid
facial bones zygomas, maxillae, mandible
sutures coronal-b/t frontal and parietals saggital-b/t parietals lamboidal-b/t occipital and parietals squamosal-b/t temporal and parietals
masseter a-elevate mandible, protrusion of mandible, side to side chewing o-zygomatic arch (maxilla, zygoma, temporal) i-angle and ramus of mandible
temporalis a-elevation of mandible, retraction of mandible o-temporal fossa (includes frontal, parietal, temporal and sphenoid greater wing) i-coronoid process of mandible
ptergoids medial-elevation of mandible (protrusion and side to side) lateral-depression of mandible (protrusion and side to side)
Created by: lamsee