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Living Anatomy
Head & Neck
Question | Answer |
---|---|
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) |