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CHAPTER NINE
Muscular System
Iliocostalis lumborum
Quadratus lumborum
Spinalis thoracis
Iliocostalis thoracis
Spinalis cervicis
Splenius capitis
Spinalis capitis
Semispinalis capitis
Longissimus capitis
Semispinalis capitis (cut)
Longissimus cervicis
Iliocostalis cervicis
Longissimus thoracis
Splenius capitis (cut)
FIGURE 9.26
Deep muscles of the back and the neck help move the head (posterior view) and hold the torso erect. The splenius capitis and
semispinalis capitis are removed on the left to show underlying muscles.
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