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Superficial
Functions:
limb control
respiration
MUSCLES (5):
trapezius
spinal accessory nerve (CN XI)
latissimus dorsi
thoracodorsal n.
convergent muscle type
lots of fibers = POWER
small insertion point
Levator Scapulae (elevates scapula)
Rhomboid Major / Minor
dorsal scapular n.
Deep (intrinsic)
Functions:
posture
(vertebral movements)
MUSCLES (3)
: Erector Spinae
Spinalis
Longissimus
Iliocostal
Intermediate
Functions:
MUSCLES (2)
Serratus Posterior Superior
intercostal nerves T1-4
Serratus Posterior Inferior
intercostal nerves T9-12