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Back and Neck OIAs
| Question | Answer |
|---|---|
| Masseter, origin | zygomatic arch and maxilla |
| masseter, insertion | angle and ramus of mandible |
| temporalis, origin | temporal fossa |
| Temporalis, insertion | coronoid process of mandible |
| medial pterygoid, origin | sphenoid, palatine, and maxillary bones |
| medial pterygoid, insertion | medial surface of mandible |
| Lateral pterygoid, origin | greater wing of sphenoid |
| Lateral pterygoid, insertion | madibular condyle |
| Anterior, Middle, posterior scalene, origin | transverse process of cervicle vertebrae |
| anterior, middle, posterior scalene, insertion | anterolaterally on ribs 1-2 |
| trapezius, origin | occipital bone, ligamentum nuchae, spinous processes of c7 and all thoracic vertebrae |
| trapezius, insertion | continuous insertion along acromion, spine of scapula, lateral 1/3 clavicle |
| levator scapulae, origin | tranverse processes of c1-c4 |
| levator scapulae, insertion | medial border of scapula |
| rhomboid major, origin | spinous processes of t2-t5 |
| rhomboid minor, origin | spinous processes of c7-t1 |
| rhomboid, insertion | medial border of scapula |
| erector spinae iliocostalis, origin | iliac crests, inferior 6 ribs, ribs 3-6 |
| erector spinae iliocostalis, insertion | angles of ribs, transverse processes of cervical vertebrae c6-c4 |
| erector spinae longissimus, origin | transverse processes of lumbar through cervical vertebrae |
| erector spinae longissimus, insertion | transverse processes of thoracic or cervical vertebrae |
| erector spinae spinalis, origin | spinous process of upper lumbar and lower thoracic vertebrae |
| erector spinae spinalis, insertion | spinous process of upper thoracic and cervicle vertebrae |
| semispinalis, origin | transverse processes of c7-t12 |
| semispinalis, insertion | occipital bone, spinous process of cervile and thoracic vertebrae t1-t4 |
| latissimus dorsi, origin | spinous processes of lower six thoracic vertebrae, lumbar vertebrae, last 3 to 4 ribs and iliac crest |
| latissimus dorsi, insertion | floor of intertubercular sulcus of humerus |
| infraspinatus, origin | infraspinous fossa of scapula |
| infraspinatus, insertion | greater tubercle of humerus |
| teres minor, origin | lateral margin of scapula |
| teres minor, insertion | greater tubercle of humerus |
| teres major, origin | posterior surface at inferior angle of scapula |
| teres major, insertion | intertubercular sulcus of humerus |
| supraspinatus, origin | supraspinous fossa of scapula |
| supraspinatus, insertion | greater tubercle of humerus |
| splenius capitus and cervicis, origin | ligamentum nuchae and spinous processes of c7-t6 |
| spenius capitus and cervicis, insertion | mastoid process, occipital bone, and transverse processes of c2-c4 |
Created by:
hberglund
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